30403940

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{79}}^1\times {\mathrm{2749}}^1$

素因数の和:2844

約数の個数: 48

約数和(自身を含む): 73920000

約数和(自身を除く): 43516060

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 79, 140, 158, 316, 395, 553, 790, 1106, 1580, 2212, 2749, 2765, 5498, 5530, 10996, 11060, 13745, 19243, 27490, 38486, 54980, 76972, 96215, 192430, 217171, 384860, 434342, 868684, 1085855, 1520197, 2171710, 3040394, 4343420, 6080788, 7600985, 15201970, 30403940]

約数ペア:

[(1, 30403940), (2, 15201970), (4, 7600985), (5, 6080788), (7, 4343420), (10, 3040394), (14, 2171710), (20, 1520197), (28, 1085855), (35, 868684), (70, 434342), (79, 384860), (140, 217171), (158, 192430), (316, 96215), (395, 76972), (553, 54980), (790, 38486), (1106, 27490), (1580, 19243), (2212, 13745), (2749, 11060), (2765, 10996), (5498, 5530)]