21799840

素因数分解:

$2^5\times 5^1\times {\mathrm{19}}^1\times {\mathrm{71}}^1\times {\mathrm{101}}^1$

素因数の和:206

約数の個数: 96

約数和(自身を含む): 55520640

約数和(自身を除く): 33720800

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 32, 38, 40, 71, 76, 80, 95, 101, 142, 152, 160, 190, 202, 284, 304, 355, 380, 404, 505, 568, 608, 710, 760, 808, 1010, 1136, 1349, 1420, 1520, 1616, 1919, 2020, 2272, 2698, 2840, 3040, 3232, 3838, 4040, 5396, 5680, 6745, 7171, 7676, 8080, 9595, 10792, 11360, 13490, 14342, 15352, 16160, 19190, 21584, 26980, 28684, 30704, 35855, 38380, 43168, 53960, 57368, 61408, 71710, 76760, 107920, 114736, 136249, 143420, 153520, 215840, 229472, 272498, 286840, 307040, 544996, 573680, 681245, 1089992, 1147360, 1362490, 2179984, 2724980, 4359968, 5449960, 10899920, 21799840]

約数ペア:

[(1, 21799840), (2, 10899920), (4, 5449960), (5, 4359968), (8, 2724980), (10, 2179984), (16, 1362490), (19, 1147360), (20, 1089992), (32, 681245), (38, 573680), (40, 544996), (71, 307040), (76, 286840), (80, 272498), (95, 229472), (101, 215840), (142, 153520), (152, 143420), (160, 136249), (190, 114736), (202, 107920), (284, 76760), (304, 71710), (355, 61408), (380, 57368), (404, 53960), (505, 43168), (568, 38380), (608, 35855), (710, 30704), (760, 28684), (808, 26980), (1010, 21584), (1136, 19190), (1349, 16160), (1420, 15352), (1520, 14342), (1616, 13490), (1919, 11360), (2020, 10792), (2272, 9595), (2698, 8080), (2840, 7676), (3040, 7171), (3232, 6745), (3838, 5680), (4040, 5396)]