19816680

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{12703}}^1$

素因数の和:12730

約数の個数: 64

約数和(自身を含む): 64028160

約数和(自身を除く): 44211480

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, 12703, 25406, 38109, 50812, 63515, 76218, 101624, 127030, 152436, 165139, 190545, 254060, 304872, 330278, 381090, 495417, 508120, 660556, 762180, 825695, 990834, 1321112, 1524360, 1651390, 1981668, 2477085, 3302780, 3963336, 4954170, 6605560, 9908340, 19816680]

約数ペア:

[(1, 19816680), (2, 9908340), (3, 6605560), (4, 4954170), (5, 3963336), (6, 3302780), (8, 2477085), (10, 1981668), (12, 1651390), (13, 1524360), (15, 1321112), (20, 990834), (24, 825695), (26, 762180), (30, 660556), (39, 508120), (40, 495417), (52, 381090), (60, 330278), (65, 304872), (78, 254060), (104, 190545), (120, 165139), (130, 152436), (156, 127030), (195, 101624), (260, 76218), (312, 63515), (390, 50812), (520, 38109), (780, 25406), (1560, 12703)]