1999788320

素因数分解:

$2^5\times 5^1\times {\mathrm{163}}^1\times {\mathrm{76679}}^1$

素因数の和:76857

約数の個数: 48

約数和(自身を含む): 4753546560

約数和(自身を除く): 2753758240

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 163, 326, 652, 815, 1304, 1630, 2608, 3260, 5216, 6520, 13040, 26080, 76679, 153358, 306716, 383395, 613432, 766790, 1226864, 1533580, 2453728, 3067160, 6134320, 12268640, 12498677, 24997354, 49994708, 62493385, 99989416, 124986770, 199978832, 249973540, 399957664, 499947080, 999894160, 1999788320]

約数ペア:

[(1, 1999788320), (2, 999894160), (4, 499947080), (5, 399957664), (8, 249973540), (10, 199978832), (16, 124986770), (20, 99989416), (32, 62493385), (40, 49994708), (80, 24997354), (160, 12498677), (163, 12268640), (326, 6134320), (652, 3067160), (815, 2453728), (1304, 1533580), (1630, 1226864), (2608, 766790), (3260, 613432), (5216, 383395), (6520, 306716), (13040, 153358), (26080, 76679)]