20006320

素因数分解:

$2^4\times 5^1\times {\mathrm{23}}^1\times {\mathrm{83}}^1\times {\mathrm{131}}^1$

素因数の和:250

約数の個数: 80

約数和(自身を含む): 49496832

約数和(自身を除く): 29490512

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 23, 40, 46, 80, 83, 92, 115, 131, 166, 184, 230, 262, 332, 368, 415, 460, 524, 655, 664, 830, 920, 1048, 1310, 1328, 1660, 1840, 1909, 2096, 2620, 3013, 3320, 3818, 5240, 6026, 6640, 7636, 9545, 10480, 10873, 12052, 15065, 15272, 19090, 21746, 24104, 30130, 30544, 38180, 43492, 48208, 54365, 60260, 76360, 86984, 108730, 120520, 152720, 173968, 217460, 241040, 250079, 434920, 500158, 869840, 1000316, 1250395, 2000632, 2500790, 4001264, 5001580, 10003160, 20006320]

約数ペア:

[(1, 20006320), (2, 10003160), (4, 5001580), (5, 4001264), (8, 2500790), (10, 2000632), (16, 1250395), (20, 1000316), (23, 869840), (40, 500158), (46, 434920), (80, 250079), (83, 241040), (92, 217460), (115, 173968), (131, 152720), (166, 120520), (184, 108730), (230, 86984), (262, 76360), (332, 60260), (368, 54365), (415, 48208), (460, 43492), (524, 38180), (655, 30544), (664, 30130), (830, 24104), (920, 21746), (1048, 19090), (1310, 15272), (1328, 15065), (1660, 12052), (1840, 10873), (1909, 10480), (2096, 9545), (2620, 7636), (3013, 6640), (3320, 6026), (3818, 5240)]