65720440

素因数分解:

$2^3\times 5^1\times {\mathrm{71}}^1\times {\mathrm{73}}^1\times {\mathrm{317}}^1$

素因数の和:472

約数の個数: 64

約数和(自身を含む): 152487360

約数和(自身を除く): 86766920

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 71, 73, 142, 146, 284, 292, 317, 355, 365, 568, 584, 634, 710, 730, 1268, 1420, 1460, 1585, 2536, 2840, 2920, 3170, 5183, 6340, 10366, 12680, 20732, 22507, 23141, 25915, 41464, 45014, 46282, 51830, 90028, 92564, 103660, 112535, 115705, 180056, 185128, 207320, 225070, 231410, 450140, 462820, 900280, 925640, 1643011, 3286022, 6572044, 8215055, 13144088, 16430110, 32860220, 65720440]

約数ペア:

[(1, 65720440), (2, 32860220), (4, 16430110), (5, 13144088), (8, 8215055), (10, 6572044), (20, 3286022), (40, 1643011), (71, 925640), (73, 900280), (142, 462820), (146, 450140), (284, 231410), (292, 225070), (317, 207320), (355, 185128), (365, 180056), (568, 115705), (584, 112535), (634, 103660), (710, 92564), (730, 90028), (1268, 51830), (1420, 46282), (1460, 45014), (1585, 41464), (2536, 25915), (2840, 23141), (2920, 22507), (3170, 20732), (5183, 12680), (6340, 10366)]