81194620

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{59}}^1\times {\mathrm{67}}^1\times {\mathrm{79}}^1$

素因数の和:227

約数の個数: 96

約数和(自身を含む): 191923200

約数和(自身を除く): 110728580

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 59, 65, 67, 79, 118, 130, 134, 158, 236, 260, 268, 295, 316, 335, 395, 590, 670, 767, 790, 871, 1027, 1180, 1340, 1534, 1580, 1742, 2054, 3068, 3484, 3835, 3953, 4108, 4355, 4661, 5135, 5293, 7670, 7906, 8710, 9322, 10270, 10586, 15340, 15812, 17420, 18644, 19765, 20540, 21172, 23305, 26465, 39530, 46610, 51389, 52930, 60593, 68809, 79060, 93220, 102778, 105860, 121186, 137618, 205556, 242372, 256945, 275236, 302965, 312287, 344045, 513890, 605930, 624574, 688090, 1027780, 1211860, 1249148, 1376180, 1561435, 3122870, 4059731, 6245740, 8119462, 16238924, 20298655, 40597310, 81194620]

約数ペア:

[(1, 81194620), (2, 40597310), (4, 20298655), (5, 16238924), (10, 8119462), (13, 6245740), (20, 4059731), (26, 3122870), (52, 1561435), (59, 1376180), (65, 1249148), (67, 1211860), (79, 1027780), (118, 688090), (130, 624574), (134, 605930), (158, 513890), (236, 344045), (260, 312287), (268, 302965), (295, 275236), (316, 256945), (335, 242372), (395, 205556), (590, 137618), (670, 121186), (767, 105860), (790, 102778), (871, 93220), (1027, 79060), (1180, 68809), (1340, 60593), (1534, 52930), (1580, 51389), (1742, 46610), (2054, 39530), (3068, 26465), (3484, 23305), (3835, 21172), (3953, 20540), (4108, 19765), (4355, 18644), (4661, 17420), (5135, 15812), (5293, 15340), (7670, 10586), (7906, 10270), (8710, 9322)]