31278780

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{13367}}^1$

素因数の和:13395

約数の個数: 72

約数和(自身を含む): 102184992

約数和(自身を除く): 70906212

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 13, 15, 18, 20, 26, 30, 36, 39, 45, 52, 60, 65, 78, 90, 117, 130, 156, 180, 195, 234, 260, 390, 468, 585, 780, 1170, 2340, 13367, 26734, 40101, 53468, 66835, 80202, 120303, 133670, 160404, 173771, 200505, 240606, 267340, 347542, 401010, 481212, 521313, 601515, 695084, 802020, 868855, 1042626, 1203030, 1563939, 1737710, 2085252, 2406060, 2606565, 3127878, 3475420, 5213130, 6255756, 7819695, 10426260, 15639390, 31278780]

約数ペア:

[(1, 31278780), (2, 15639390), (3, 10426260), (4, 7819695), (5, 6255756), (6, 5213130), (9, 3475420), (10, 3127878), (12, 2606565), (13, 2406060), (15, 2085252), (18, 1737710), (20, 1563939), (26, 1203030), (30, 1042626), (36, 868855), (39, 802020), (45, 695084), (52, 601515), (60, 521313), (65, 481212), (78, 401010), (90, 347542), (117, 267340), (130, 240606), (156, 200505), (180, 173771), (195, 160404), (234, 133670), (260, 120303), (390, 80202), (468, 66835), (585, 53468), (780, 40101), (1170, 26734), (2340, 13367)]