31881720

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{107}}^1\times {\mathrm{191}}^1$

素因数の和:325

約数の個数: 128

約数和(自身を含む): 104509440

約数和(自身を除く): 72627720

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, 107, 120, 130, 156, 191, 195, 214, 260, 312, 321, 382, 390, 428, 520, 535, 573, 642, 764, 780, 856, 955, 1070, 1146, 1284, 1391, 1528, 1560, 1605, 1910, 2140, 2292, 2483, 2568, 2782, 2865, 3210, 3820, 4173, 4280, 4584, 4966, 5564, 5730, 6420, 6955, 7449, 7640, 8346, 9932, 11128, 11460, 12415, 12840, 13910, 14898, 16692, 19864, 20437, 20865, 22920, 24830, 27820, 29796, 33384, 37245, 40874, 41730, 49660, 55640, 59592, 61311, 74490, 81748, 83460, 99320, 102185, 122622, 148980, 163496, 166920, 204370, 245244, 265681, 297960, 306555, 408740, 490488, 531362, 613110, 797043, 817480, 1062724, 1226220, 1328405, 1594086, 2125448, 2452440, 2656810, 3188172, 3985215, 5313620, 6376344, 7970430, 10627240, 15940860, 31881720]

約数ペア:

[(1, 31881720), (2, 15940860), (3, 10627240), (4, 7970430), (5, 6376344), (6, 5313620), (8, 3985215), (10, 3188172), (12, 2656810), (13, 2452440), (15, 2125448), (20, 1594086), (24, 1328405), (26, 1226220), (30, 1062724), (39, 817480), (40, 797043), (52, 613110), (60, 531362), (65, 490488), (78, 408740), (104, 306555), (107, 297960), (120, 265681), (130, 245244), (156, 204370), (191, 166920), (195, 163496), (214, 148980), (260, 122622), (312, 102185), (321, 99320), (382, 83460), (390, 81748), (428, 74490), (520, 61311), (535, 59592), (573, 55640), (642, 49660), (764, 41730), (780, 40874), (856, 37245), (955, 33384), (1070, 29796), (1146, 27820), (1284, 24830), (1391, 22920), (1528, 20865), (1560, 20437), (1605, 19864), (1910, 16692), (2140, 14898), (2292, 13910), (2483, 12840), (2568, 12415), (2782, 11460), (2865, 11128), (3210, 9932), (3820, 8346), (4173, 7640), (4280, 7449), (4584, 6955), (4966, 6420), (5564, 5730)]