156779420

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{159979}}^1$

素因数の和:160002

約数の個数: 36

約数和(自身を含む): 382992120

約数和(自身を除く): 226212700

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 490, 980, 159979, 319958, 639916, 799895, 1119853, 1599790, 2239706, 3199580, 4479412, 5599265, 7838971, 11198530, 15677942, 22397060, 31355884, 39194855, 78389710, 156779420]

約数ペア:

[(1, 156779420), (2, 78389710), (4, 39194855), (5, 31355884), (7, 22397060), (10, 15677942), (14, 11198530), (20, 7838971), (28, 5599265), (35, 4479412), (49, 3199580), (70, 2239706), (98, 1599790), (140, 1119853), (196, 799895), (245, 639916), (490, 319958), (980, 159979)]