220199980

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{647}}^1$

素因数の和:704

約数の個数: 192

約数和(自身を含む): 658409472

約数和(自身を除く): 438209492

約数列:

[1, 2, 4, 5, 7, 10, 11, 13, 14, 17, 20, 22, 26, 28, 34, 35, 44, 52, 55, 65, 68, 70, 77, 85, 91, 110, 119, 130, 140, 143, 154, 170, 182, 187, 220, 221, 238, 260, 286, 308, 340, 364, 374, 385, 442, 455, 476, 572, 595, 647, 715, 748, 770, 884, 910, 935, 1001, 1105, 1190, 1294, 1309, 1430, 1540, 1547, 1820, 1870, 2002, 2210, 2380, 2431, 2588, 2618, 2860, 3094, 3235, 3740, 4004, 4420, 4529, 4862, 5005, 5236, 6188, 6470, 6545, 7117, 7735, 8411, 9058, 9724, 10010, 10999, 12155, 12940, 13090, 14234, 15470, 16822, 17017, 18116, 20020, 21998, 22645, 24310, 26180, 28468, 30940, 33644, 34034, 35585, 42055, 43996, 45290, 48620, 49819, 54995, 58877, 68068, 71170, 76993, 84110, 85085, 90580, 92521, 99638, 109990, 117754, 120989, 142340, 142987, 153986, 168220, 170170, 185042, 199276, 219980, 235508, 241978, 249095, 285974, 294385, 307972, 340340, 370084, 384965, 462605, 483956, 498190, 571948, 588770, 604945, 647647, 714935, 769930, 846923, 925210, 996380, 1000909, 1177540, 1209890, 1295294, 1429870, 1539860, 1572857, 1693846, 1850420, 2001818, 2419780, 2590588, 2859740, 3145714, 3238235, 3387692, 4003636, 4234615, 5004545, 6291428, 6476470, 7864285, 8469230, 10009090, 11009999, 12952940, 15728570, 16938460, 20018180, 22019998, 31457140, 44039996, 55049995, 110099990, 220199980]

約数ペア:

[(1, 220199980), (2, 110099990), (4, 55049995), (5, 44039996), (7, 31457140), (10, 22019998), (11, 20018180), (13, 16938460), (14, 15728570), (17, 12952940), (20, 11009999), (22, 10009090), (26, 8469230), (28, 7864285), (34, 6476470), (35, 6291428), (44, 5004545), (52, 4234615), (55, 4003636), (65, 3387692), (68, 3238235), (70, 3145714), (77, 2859740), (85, 2590588), (91, 2419780), (110, 2001818), (119, 1850420), (130, 1693846), (140, 1572857), (143, 1539860), (154, 1429870), (170, 1295294), (182, 1209890), (187, 1177540), (220, 1000909), (221, 996380), (238, 925210), (260, 846923), (286, 769930), (308, 714935), (340, 647647), (364, 604945), (374, 588770), (385, 571948), (442, 498190), (455, 483956), (476, 462605), (572, 384965), (595, 370084), (647, 340340), (715, 307972), (748, 294385), (770, 285974), (884, 249095), (910, 241978), (935, 235508), (1001, 219980), (1105, 199276), (1190, 185042), (1294, 170170), (1309, 168220), (1430, 153986), (1540, 142987), (1547, 142340), (1820, 120989), (1870, 117754), (2002, 109990), (2210, 99638), (2380, 92521), (2431, 90580), (2588, 85085), (2618, 84110), (2860, 76993), (3094, 71170), (3235, 68068), (3740, 58877), (4004, 54995), (4420, 49819), (4529, 48620), (4862, 45290), (5005, 43996), (5236, 42055), (6188, 35585), (6470, 34034), (6545, 33644), (7117, 30940), (7735, 28468), (8411, 26180), (9058, 24310), (9724, 22645), (10010, 21998), (10999, 20020), (12155, 18116), (12940, 17017), (13090, 16822), (14234, 15470)]