20010505905

素因数分解:

$3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{29}}^2\times {\mathrm{89}}^1\times {\mathrm{457}}^1$

素因数の和:628

約数の個数: 144

約数和(自身を含む): 39205661040

約数和(自身を除く): 19195155135

約数列:

[1, 3, 5, 9, 13, 15, 29, 39, 45, 65, 87, 89, 117, 145, 195, 261, 267, 377, 435, 445, 457, 585, 801, 841, 1131, 1157, 1305, 1335, 1371, 1885, 2285, 2523, 2581, 3393, 3471, 4005, 4113, 4205, 5655, 5785, 5941, 6855, 7569, 7743, 10413, 10933, 12615, 12905, 13253, 16965, 17355, 17823, 20565, 23229, 29705, 32799, 33553, 37845, 38715, 39759, 40673, 52065, 53469, 54665, 66265, 74849, 89115, 98397, 100659, 116145, 119277, 122019, 163995, 167765, 172289, 198795, 203365, 224547, 267345, 301977, 366057, 374245, 384337, 491985, 503295, 516867, 528749, 596385, 610095, 673641, 861445, 973037, 1122735, 1153011, 1179517, 1509885, 1550601, 1586247, 1830285, 1921685, 2584335, 2643745, 2919111, 3368205, 3459033, 3538551, 4758741, 4865185, 4996381, 5765055, 5897585, 7753005, 7931235, 8757333, 10615653, 14595555, 14989143, 15333721, 17295165, 17692755, 23793705, 24981905, 34205993, 43786665, 44967429, 46001163, 53078265, 74945715, 76668605, 102617979, 138003489, 171029965, 224837145, 230005815, 307853937, 444677909, 513089895, 690017445, 1334033727, 1539269685, 2223389545, 4002101181, 6670168635, 20010505905]

約数ペア:

[(1, 20010505905), (3, 6670168635), (5, 4002101181), (9, 2223389545), (13, 1539269685), (15, 1334033727), (29, 690017445), (39, 513089895), (45, 444677909), (65, 307853937), (87, 230005815), (89, 224837145), (117, 171029965), (145, 138003489), (195, 102617979), (261, 76668605), (267, 74945715), (377, 53078265), (435, 46001163), (445, 44967429), (457, 43786665), (585, 34205993), (801, 24981905), (841, 23793705), (1131, 17692755), (1157, 17295165), (1305, 15333721), (1335, 14989143), (1371, 14595555), (1885, 10615653), (2285, 8757333), (2523, 7931235), (2581, 7753005), (3393, 5897585), (3471, 5765055), (4005, 4996381), (4113, 4865185), (4205, 4758741), (5655, 3538551), (5785, 3459033), (5941, 3368205), (6855, 2919111), (7569, 2643745), (7743, 2584335), (10413, 1921685), (10933, 1830285), (12615, 1586247), (12905, 1550601), (13253, 1509885), (16965, 1179517), (17355, 1153011), (17823, 1122735), (20565, 973037), (23229, 861445), (29705, 673641), (32799, 610095), (33553, 596385), (37845, 528749), (38715, 516867), (39759, 503295), (40673, 491985), (52065, 384337), (53469, 374245), (54665, 366057), (66265, 301977), (74849, 267345), (89115, 224547), (98397, 203365), (100659, 198795), (116145, 172289), (119277, 167765), (122019, 163995)]