19715280

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{89}}^1$

素因数の和:189

約数の個数: 160

約数和(自身を含む): 67495680

約数和(自身を除く): 47780400

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 16, 20, 24, 26, 30, 39, 40, 48, 52, 60, 65, 71, 78, 80, 89, 104, 120, 130, 142, 156, 178, 195, 208, 213, 240, 260, 267, 284, 312, 355, 356, 390, 426, 445, 520, 534, 568, 624, 710, 712, 780, 852, 890, 923, 1040, 1065, 1068, 1136, 1157, 1335, 1420, 1424, 1560, 1704, 1780, 1846, 2130, 2136, 2314, 2670, 2769, 2840, 3120, 3408, 3471, 3560, 3692, 4260, 4272, 4615, 4628, 5340, 5538, 5680, 5785, 6319, 6942, 7120, 7384, 8520, 9230, 9256, 10680, 11076, 11570, 12638, 13845, 13884, 14768, 17040, 17355, 18460, 18512, 18957, 21360, 22152, 23140, 25276, 27690, 27768, 31595, 34710, 36920, 37914, 44304, 46280, 50552, 55380, 55536, 63190, 69420, 73840, 75828, 82147, 92560, 94785, 101104, 110760, 126380, 138840, 151656, 164294, 189570, 221520, 246441, 252760, 277680, 303312, 328588, 379140, 410735, 492882, 505520, 657176, 758280, 821470, 985764, 1232205, 1314352, 1516560, 1642940, 1971528, 2464410, 3285880, 3943056, 4928820, 6571760, 9857640, 19715280]

約数ペア:

[(1, 19715280), (2, 9857640), (3, 6571760), (4, 4928820), (5, 3943056), (6, 3285880), (8, 2464410), (10, 1971528), (12, 1642940), (13, 1516560), (15, 1314352), (16, 1232205), (20, 985764), (24, 821470), (26, 758280), (30, 657176), (39, 505520), (40, 492882), (48, 410735), (52, 379140), (60, 328588), (65, 303312), (71, 277680), (78, 252760), (80, 246441), (89, 221520), (104, 189570), (120, 164294), (130, 151656), (142, 138840), (156, 126380), (178, 110760), (195, 101104), (208, 94785), (213, 92560), (240, 82147), (260, 75828), (267, 73840), (284, 69420), (312, 63190), (355, 55536), (356, 55380), (390, 50552), (426, 46280), (445, 44304), (520, 37914), (534, 36920), (568, 34710), (624, 31595), (710, 27768), (712, 27690), (780, 25276), (852, 23140), (890, 22152), (923, 21360), (1040, 18957), (1065, 18512), (1068, 18460), (1136, 17355), (1157, 17040), (1335, 14768), (1420, 13884), (1424, 13845), (1560, 12638), (1704, 11570), (1780, 11076), (1846, 10680), (2130, 9256), (2136, 9230), (2314, 8520), (2670, 7384), (2769, 7120), (2840, 6942), (3120, 6319), (3408, 5785), (3471, 5680), (3560, 5538), (3692, 5340), (4260, 4628), (4272, 4615)]