20018180

素因数分解:

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

素因数の和:693

約数の個数: 96

約数和(自身を含む): 54867456

約数和(自身を除く): 34849276

約数列:

[1, 2, 4, 5, 7, 10, 13, 14, 17, 20, 26, 28, 34, 35, 52, 65, 68, 70, 85, 91, 119, 130, 140, 170, 182, 221, 238, 260, 340, 364, 442, 455, 476, 595, 647, 884, 910, 1105, 1190, 1294, 1547, 1820, 2210, 2380, 2588, 3094, 3235, 4420, 4529, 6188, 6470, 7735, 8411, 9058, 10999, 12940, 15470, 16822, 18116, 21998, 22645, 30940, 33644, 42055, 43996, 45290, 54995, 58877, 76993, 84110, 90580, 109990, 117754, 142987, 153986, 168220, 219980, 235508, 285974, 294385, 307972, 384965, 571948, 588770, 714935, 769930, 1000909, 1177540, 1429870, 1539860, 2001818, 2859740, 4003636, 5004545, 10009090, 20018180]

約数ペア:

[(1, 20018180), (2, 10009090), (4, 5004545), (5, 4003636), (7, 2859740), (10, 2001818), (13, 1539860), (14, 1429870), (17, 1177540), (20, 1000909), (26, 769930), (28, 714935), (34, 588770), (35, 571948), (52, 384965), (65, 307972), (68, 294385), (70, 285974), (85, 235508), (91, 219980), (119, 168220), (130, 153986), (140, 142987), (170, 117754), (182, 109990), (221, 90580), (238, 84110), (260, 76993), (340, 58877), (364, 54995), (442, 45290), (455, 43996), (476, 42055), (595, 33644), (647, 30940), (884, 22645), (910, 21998), (1105, 18116), (1190, 16822), (1294, 15470), (1547, 12940), (1820, 10999), (2210, 9058), (2380, 8411), (2588, 7735), (3094, 6470), (3235, 6188), (4420, 4529)]