20280491320

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{79}}^1\times {\mathrm{149}}^1\times {\mathrm{2267}}^1$

素因数の和:2525

約数の個数: 128

約数和(自身を含む): 48988800000

約数和(自身を除く): 28708308680

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 76, 79, 95, 149, 152, 158, 190, 298, 316, 380, 395, 596, 632, 745, 760, 790, 1192, 1490, 1501, 1580, 2267, 2831, 2980, 3002, 3160, 4534, 5662, 5960, 6004, 7505, 9068, 11324, 11335, 11771, 12008, 14155, 15010, 18136, 22648, 22670, 23542, 28310, 30020, 43073, 45340, 47084, 56620, 58855, 60040, 86146, 90680, 94168, 113240, 117710, 172292, 179093, 215365, 223649, 235420, 337783, 344584, 358186, 430730, 447298, 470840, 675566, 716372, 861460, 894596, 895465, 1118245, 1351132, 1432744, 1688915, 1722920, 1789192, 1790930, 2236490, 2702264, 3377830, 3402767, 3581860, 4472980, 6417877, 6755660, 6805534, 7163720, 8945960, 12835754, 13511320, 13611068, 17013835, 25671508, 26684857, 27222136, 32089385, 34027670, 51343016, 53369714, 64178770, 68055340, 106739428, 128357540, 133424285, 136110680, 213478856, 256715080, 266848570, 507012283, 533697140, 1014024566, 1067394280, 2028049132, 2535061415, 4056098264, 5070122830, 10140245660, 20280491320]

約数ペア:

[(1, 20280491320), (2, 10140245660), (4, 5070122830), (5, 4056098264), (8, 2535061415), (10, 2028049132), (19, 1067394280), (20, 1014024566), (38, 533697140), (40, 507012283), (76, 266848570), (79, 256715080), (95, 213478856), (149, 136110680), (152, 133424285), (158, 128357540), (190, 106739428), (298, 68055340), (316, 64178770), (380, 53369714), (395, 51343016), (596, 34027670), (632, 32089385), (745, 27222136), (760, 26684857), (790, 25671508), (1192, 17013835), (1490, 13611068), (1501, 13511320), (1580, 12835754), (2267, 8945960), (2831, 7163720), (2980, 6805534), (3002, 6755660), (3160, 6417877), (4534, 4472980), (5662, 3581860), (5960, 3402767), (6004, 3377830), (7505, 2702264), (9068, 2236490), (11324, 1790930), (11335, 1789192), (11771, 1722920), (12008, 1688915), (14155, 1432744), (15010, 1351132), (18136, 1118245), (22648, 895465), (22670, 894596), (23542, 861460), (28310, 716372), (30020, 675566), (43073, 470840), (45340, 447298), (47084, 430730), (56620, 358186), (58855, 344584), (60040, 337783), (86146, 235420), (90680, 223649), (94168, 215365), (113240, 179093), (117710, 172292)]