19938360

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{12781}}^1$

素因数の和:12808

約数の個数: 64

約数和(自身を含む): 64421280

約数和(自身を除く): 44482920

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 20, 24, 26, 30, 39, 40, 52, 60, 65, 78, 104, 120, 130, 156, 195, 260, 312, 390, 520, 780, 1560, 12781, 25562, 38343, 51124, 63905, 76686, 102248, 127810, 153372, 166153, 191715, 255620, 306744, 332306, 383430, 498459, 511240, 664612, 766860, 830765, 996918, 1329224, 1533720, 1661530, 1993836, 2492295, 3323060, 3987672, 4984590, 6646120, 9969180, 19938360]

約数ペア:

[(1, 19938360), (2, 9969180), (3, 6646120), (4, 4984590), (5, 3987672), (6, 3323060), (8, 2492295), (10, 1993836), (12, 1661530), (13, 1533720), (15, 1329224), (20, 996918), (24, 830765), (26, 766860), (30, 664612), (39, 511240), (40, 498459), (52, 383430), (60, 332306), (65, 306744), (78, 255620), (104, 191715), (120, 166153), (130, 153372), (156, 127810), (195, 102248), (260, 76686), (312, 63905), (390, 51124), (520, 38343), (780, 25562), (1560, 12781)]