2121900400

素因数分解:

$2^4\times 5^2\times {\mathrm{31}}^1\times {\mathrm{211}}^1\times {\mathrm{811}}^1$

素因数の和:1071

約数の個数: 120

約数和(自身を含む): 5293772288

約数和(自身を除く): 3171871888

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 31, 40, 50, 62, 80, 100, 124, 155, 200, 211, 248, 310, 400, 422, 496, 620, 775, 811, 844, 1055, 1240, 1550, 1622, 1688, 2110, 2480, 3100, 3244, 3376, 4055, 4220, 5275, 6200, 6488, 6541, 8110, 8440, 10550, 12400, 12976, 13082, 16220, 16880, 20275, 21100, 25141, 26164, 32440, 32705, 40550, 42200, 50282, 52328, 64880, 65410, 81100, 84400, 100564, 104656, 125705, 130820, 162200, 163525, 171121, 201128, 251410, 261640, 324400, 327050, 342242, 402256, 502820, 523280, 628525, 654100, 684484, 855605, 1005640, 1257050, 1308200, 1368968, 1711210, 2011280, 2514100, 2616400, 2737936, 3422420, 4278025, 5028200, 5304751, 6844840, 8556050, 10056400, 10609502, 13689680, 17112100, 21219004, 26523755, 34224200, 42438008, 53047510, 68448400, 84876016, 106095020, 132618775, 212190040, 265237550, 424380080, 530475100, 1060950200, 2121900400]

約数ペア:

[(1, 2121900400), (2, 1060950200), (4, 530475100), (5, 424380080), (8, 265237550), (10, 212190040), (16, 132618775), (20, 106095020), (25, 84876016), (31, 68448400), (40, 53047510), (50, 42438008), (62, 34224200), (80, 26523755), (100, 21219004), (124, 17112100), (155, 13689680), (200, 10609502), (211, 10056400), (248, 8556050), (310, 6844840), (400, 5304751), (422, 5028200), (496, 4278025), (620, 3422420), (775, 2737936), (811, 2616400), (844, 2514100), (1055, 2011280), (1240, 1711210), (1550, 1368968), (1622, 1308200), (1688, 1257050), (2110, 1005640), (2480, 855605), (3100, 684484), (3244, 654100), (3376, 628525), (4055, 523280), (4220, 502820), (5275, 402256), (6200, 342242), (6488, 327050), (6541, 324400), (8110, 261640), (8440, 251410), (10550, 201128), (12400, 171121), (12976, 163525), (13082, 162200), (16220, 130820), (16880, 125705), (20275, 104656), (21100, 100564), (25141, 84400), (26164, 81100), (32440, 65410), (32705, 64880), (40550, 52328), (42200, 50282)]