21004237488

素因数分解:

$2^4\times 3^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{1085827}}^1$

素因数の和:1085882

約数の個数: 80

約数和(自身を含む): 60319917056

約数和(自身を除く): 39315679568

約数列:

[1, 2, 3, 4, 6, 8, 12, 13, 16, 24, 26, 31, 39, 48, 52, 62, 78, 93, 104, 124, 156, 186, 208, 248, 312, 372, 403, 496, 624, 744, 806, 1209, 1488, 1612, 2418, 3224, 4836, 6448, 9672, 19344, 1085827, 2171654, 3257481, 4343308, 6514962, 8686616, 13029924, 14115751, 17373232, 26059848, 28231502, 33660637, 42347253, 52119696, 56463004, 67321274, 84694506, 100981911, 112926008, 134642548, 169389012, 201963822, 225852016, 269285096, 338778024, 403927644, 437588281, 538570192, 677556048, 807855288, 875176562, 1312764843, 1615710576, 1750353124, 2625529686, 3500706248, 5251059372, 7001412496, 10502118744, 21004237488]

約数ペア:

[(1, 21004237488), (2, 10502118744), (3, 7001412496), (4, 5251059372), (6, 3500706248), (8, 2625529686), (12, 1750353124), (13, 1615710576), (16, 1312764843), (24, 875176562), (26, 807855288), (31, 677556048), (39, 538570192), (48, 437588281), (52, 403927644), (62, 338778024), (78, 269285096), (93, 225852016), (104, 201963822), (124, 169389012), (156, 134642548), (186, 112926008), (208, 100981911), (248, 84694506), (312, 67321274), (372, 56463004), (403, 52119696), (496, 42347253), (624, 33660637), (744, 28231502), (806, 26059848), (1209, 17373232), (1488, 14115751), (1612, 13029924), (2418, 8686616), (3224, 6514962), (4836, 4343308), (6448, 3257481), (9672, 2171654), (19344, 1085827)]