80008720

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{59}}^1\times {\mathrm{67}}^1$

素因数の和:173

約数の個数: 160

約数和(自身を含む): 218557440

約数和(自身を除く): 138548720

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 23, 40, 44, 46, 55, 59, 67, 80, 88, 92, 110, 115, 118, 134, 176, 184, 220, 230, 236, 253, 268, 295, 335, 368, 440, 460, 472, 506, 536, 590, 649, 670, 737, 880, 920, 944, 1012, 1072, 1180, 1265, 1298, 1340, 1357, 1474, 1541, 1840, 2024, 2360, 2530, 2596, 2680, 2714, 2948, 3082, 3245, 3685, 3953, 4048, 4720, 5060, 5192, 5360, 5428, 5896, 6164, 6490, 6785, 7370, 7705, 7906, 10120, 10384, 10856, 11792, 12328, 12980, 13570, 14740, 14927, 15410, 15812, 16951, 19765, 20240, 21712, 24656, 25960, 27140, 29480, 29854, 30820, 31624, 33902, 39530, 43483, 51920, 54280, 58960, 59708, 61640, 63248, 67804, 74635, 79060, 84755, 86966, 90919, 108560, 119416, 123280, 135608, 149270, 158120, 169510, 173932, 181838, 217415, 238832, 271216, 298540, 316240, 339020, 347864, 363676, 434830, 454595, 597080, 678040, 695728, 727352, 869660, 909190, 1000109, 1194160, 1356080, 1454704, 1739320, 1818380, 2000218, 3478640, 3636760, 4000436, 5000545, 7273520, 8000872, 10001090, 16001744, 20002180, 40004360, 80008720]

約数ペア:

[(1, 80008720), (2, 40004360), (4, 20002180), (5, 16001744), (8, 10001090), (10, 8000872), (11, 7273520), (16, 5000545), (20, 4000436), (22, 3636760), (23, 3478640), (40, 2000218), (44, 1818380), (46, 1739320), (55, 1454704), (59, 1356080), (67, 1194160), (80, 1000109), (88, 909190), (92, 869660), (110, 727352), (115, 695728), (118, 678040), (134, 597080), (176, 454595), (184, 434830), (220, 363676), (230, 347864), (236, 339020), (253, 316240), (268, 298540), (295, 271216), (335, 238832), (368, 217415), (440, 181838), (460, 173932), (472, 169510), (506, 158120), (536, 149270), (590, 135608), (649, 123280), (670, 119416), (737, 108560), (880, 90919), (920, 86966), (944, 84755), (1012, 79060), (1072, 74635), (1180, 67804), (1265, 63248), (1298, 61640), (1340, 59708), (1357, 58960), (1474, 54280), (1541, 51920), (1840, 43483), (2024, 39530), (2360, 33902), (2530, 31624), (2596, 30820), (2680, 29854), (2714, 29480), (2948, 27140), (3082, 25960), (3245, 24656), (3685, 21712), (3953, 20240), (4048, 19765), (4720, 16951), (5060, 15812), (5192, 15410), (5360, 14927), (5428, 14740), (5896, 13570), (6164, 12980), (6490, 12328), (6785, 11792), (7370, 10856), (7705, 10384), (7906, 10120)]