20161497860

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{53}}^1\times {\mathrm{388169}}^1$

素因数の和:388245

約数の個数: 72

約数和(自身を含む): 50181064920

約数和(自身を除く): 30019567060

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 53, 70, 98, 106, 140, 196, 212, 245, 265, 371, 490, 530, 742, 980, 1060, 1484, 1855, 2597, 3710, 5194, 7420, 10388, 12985, 25970, 51940, 388169, 776338, 1552676, 1940845, 2717183, 3881690, 5434366, 7763380, 10868732, 13585915, 19020281, 20572957, 27171830, 38040562, 41145914, 54343660, 76081124, 82291828, 95101405, 102864785, 144010699, 190202810, 205729570, 288021398, 380405620, 411459140, 576042796, 720053495, 1008074893, 1440106990, 2016149786, 2880213980, 4032299572, 5040374465, 10080748930, 20161497860]

約数ペア:

[(1, 20161497860), (2, 10080748930), (4, 5040374465), (5, 4032299572), (7, 2880213980), (10, 2016149786), (14, 1440106990), (20, 1008074893), (28, 720053495), (35, 576042796), (49, 411459140), (53, 380405620), (70, 288021398), (98, 205729570), (106, 190202810), (140, 144010699), (196, 102864785), (212, 95101405), (245, 82291828), (265, 76081124), (371, 54343660), (490, 41145914), (530, 38040562), (742, 27171830), (980, 20572957), (1060, 19020281), (1484, 13585915), (1855, 10868732), (2597, 7763380), (3710, 5434366), (5194, 3881690), (7420, 2717183), (10388, 1940845), (12985, 1552676), (25970, 776338), (51940, 388169)]