688486660

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{83}}^2\times {\mathrm{263}}^1$

素因数の和:457

約数の個数: 72

約数和(自身を含む): 1546332480

約数和(自身を除く): 857845820

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 83, 95, 166, 190, 263, 332, 380, 415, 526, 830, 1052, 1315, 1577, 1660, 2630, 3154, 4997, 5260, 6308, 6889, 7885, 9994, 13778, 15770, 19988, 21829, 24985, 27556, 31540, 34445, 43658, 49970, 68890, 87316, 99940, 109145, 130891, 137780, 218290, 261782, 414751, 436580, 523564, 654455, 829502, 1308910, 1659004, 1811807, 2073755, 2617820, 3623614, 4147510, 7247228, 8295020, 9059035, 18118070, 34424333, 36236140, 68848666, 137697332, 172121665, 344243330, 688486660]

約数ペア:

[(1, 688486660), (2, 344243330), (4, 172121665), (5, 137697332), (10, 68848666), (19, 36236140), (20, 34424333), (38, 18118070), (76, 9059035), (83, 8295020), (95, 7247228), (166, 4147510), (190, 3623614), (263, 2617820), (332, 2073755), (380, 1811807), (415, 1659004), (526, 1308910), (830, 829502), (1052, 654455), (1315, 523564), (1577, 436580), (1660, 414751), (2630, 261782), (3154, 218290), (4997, 137780), (5260, 130891), (6308, 109145), (6889, 99940), (7885, 87316), (9994, 68890), (13778, 49970), (15770, 43658), (19988, 34445), (21829, 31540), (24985, 27556)]