18643940

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{163}}^1$

素因数の和:241

約数の個数: 96

約数和(自身を含む): 48491520

約数和(自身を除く): 29847580

約数列:

[1, 2, 4, 5, 7, 10, 14, 19, 20, 28, 35, 38, 43, 70, 76, 86, 95, 133, 140, 163, 172, 190, 215, 266, 301, 326, 380, 430, 532, 602, 652, 665, 815, 817, 860, 1141, 1204, 1330, 1505, 1630, 1634, 2282, 2660, 3010, 3097, 3260, 3268, 4085, 4564, 5705, 5719, 6020, 6194, 7009, 8170, 11410, 11438, 12388, 14018, 15485, 16340, 21679, 22820, 22876, 28036, 28595, 30970, 35045, 43358, 49063, 57190, 61940, 70090, 86716, 98126, 108395, 114380, 133171, 140180, 196252, 216790, 245315, 266342, 433580, 490630, 532684, 665855, 932197, 981260, 1331710, 1864394, 2663420, 3728788, 4660985, 9321970, 18643940]

約数ペア:

[(1, 18643940), (2, 9321970), (4, 4660985), (5, 3728788), (7, 2663420), (10, 1864394), (14, 1331710), (19, 981260), (20, 932197), (28, 665855), (35, 532684), (38, 490630), (43, 433580), (70, 266342), (76, 245315), (86, 216790), (95, 196252), (133, 140180), (140, 133171), (163, 114380), (172, 108395), (190, 98126), (215, 86716), (266, 70090), (301, 61940), (326, 57190), (380, 49063), (430, 43358), (532, 35045), (602, 30970), (652, 28595), (665, 28036), (815, 22876), (817, 22820), (860, 21679), (1141, 16340), (1204, 15485), (1330, 14018), (1505, 12388), (1630, 11438), (1634, 11410), (2282, 8170), (2660, 7009), (3010, 6194), (3097, 6020), (3260, 5719), (3268, 5705), (4085, 4564)]