21454680

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{809}}^1$

素因数の和:853

約数の個数: 128

約数和(自身を含む): 73483200

約数和(自身を除く): 52028520

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 17, 20, 24, 26, 30, 34, 39, 40, 51, 52, 60, 65, 68, 78, 85, 102, 104, 120, 130, 136, 156, 170, 195, 204, 221, 255, 260, 312, 340, 390, 408, 442, 510, 520, 663, 680, 780, 809, 884, 1020, 1105, 1326, 1560, 1618, 1768, 2040, 2210, 2427, 2652, 3236, 3315, 4045, 4420, 4854, 5304, 6472, 6630, 8090, 8840, 9708, 10517, 12135, 13260, 13753, 16180, 19416, 21034, 24270, 26520, 27506, 31551, 32360, 41259, 42068, 48540, 52585, 55012, 63102, 68765, 82518, 84136, 97080, 105170, 110024, 126204, 137530, 157755, 165036, 178789, 206295, 210340, 252408, 275060, 315510, 330072, 357578, 412590, 420680, 536367, 550120, 631020, 715156, 825180, 893945, 1072734, 1262040, 1430312, 1650360, 1787890, 2145468, 2681835, 3575780, 4290936, 5363670, 7151560, 10727340, 21454680]

約数ペア:

[(1, 21454680), (2, 10727340), (3, 7151560), (4, 5363670), (5, 4290936), (6, 3575780), (8, 2681835), (10, 2145468), (12, 1787890), (13, 1650360), (15, 1430312), (17, 1262040), (20, 1072734), (24, 893945), (26, 825180), (30, 715156), (34, 631020), (39, 550120), (40, 536367), (51, 420680), (52, 412590), (60, 357578), (65, 330072), (68, 315510), (78, 275060), (85, 252408), (102, 210340), (104, 206295), (120, 178789), (130, 165036), (136, 157755), (156, 137530), (170, 126204), (195, 110024), (204, 105170), (221, 97080), (255, 84136), (260, 82518), (312, 68765), (340, 63102), (390, 55012), (408, 52585), (442, 48540), (510, 42068), (520, 41259), (663, 32360), (680, 31551), (780, 27506), (809, 26520), (884, 24270), (1020, 21034), (1105, 19416), (1326, 16180), (1560, 13753), (1618, 13260), (1768, 12135), (2040, 10517), (2210, 9708), (2427, 8840), (2652, 8090), (3236, 6630), (3315, 6472), (4045, 5304), (4420, 4854)]