19618040

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{1217}}^1$

素因数の和:1272

約数の個数: 64

約数和(自身を含む): 49109760

約数和(自身を除く): 29491720

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 31, 40, 52, 62, 65, 104, 124, 130, 155, 248, 260, 310, 403, 520, 620, 806, 1217, 1240, 1612, 2015, 2434, 3224, 4030, 4868, 6085, 8060, 9736, 12170, 15821, 16120, 24340, 31642, 37727, 48680, 63284, 75454, 79105, 126568, 150908, 158210, 188635, 301816, 316420, 377270, 490451, 632840, 754540, 980902, 1509080, 1961804, 2452255, 3923608, 4904510, 9809020, 19618040]

約数ペア:

[(1, 19618040), (2, 9809020), (4, 4904510), (5, 3923608), (8, 2452255), (10, 1961804), (13, 1509080), (20, 980902), (26, 754540), (31, 632840), (40, 490451), (52, 377270), (62, 316420), (65, 301816), (104, 188635), (124, 158210), (130, 150908), (155, 126568), (248, 79105), (260, 75454), (310, 63284), (403, 48680), (520, 37727), (620, 31642), (806, 24340), (1217, 16120), (1240, 15821), (1612, 12170), (2015, 9736), (2434, 8060), (3224, 6085), (4030, 4868)]