20841920

素因数分解:

$2^6\times 5^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{191}}^1$

素因数の和:250

約数の個数: 112

約数和(自身を含む): 56180736

約数和(自身を除く): 35338816

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 31, 32, 40, 44, 55, 62, 64, 80, 88, 110, 124, 155, 160, 176, 191, 220, 248, 310, 320, 341, 352, 382, 440, 496, 620, 682, 704, 764, 880, 955, 992, 1240, 1364, 1528, 1705, 1760, 1910, 1984, 2101, 2480, 2728, 3056, 3410, 3520, 3820, 4202, 4960, 5456, 5921, 6112, 6820, 7640, 8404, 9920, 10505, 10912, 11842, 12224, 13640, 15280, 16808, 21010, 21824, 23684, 27280, 29605, 30560, 33616, 42020, 47368, 54560, 59210, 61120, 65131, 67232, 84040, 94736, 109120, 118420, 130262, 134464, 168080, 189472, 236840, 260524, 325655, 336160, 378944, 473680, 521048, 651310, 672320, 947360, 1042096, 1302620, 1894720, 2084192, 2605240, 4168384, 5210480, 10420960, 20841920]

約数ペア:

[(1, 20841920), (2, 10420960), (4, 5210480), (5, 4168384), (8, 2605240), (10, 2084192), (11, 1894720), (16, 1302620), (20, 1042096), (22, 947360), (31, 672320), (32, 651310), (40, 521048), (44, 473680), (55, 378944), (62, 336160), (64, 325655), (80, 260524), (88, 236840), (110, 189472), (124, 168080), (155, 134464), (160, 130262), (176, 118420), (191, 109120), (220, 94736), (248, 84040), (310, 67232), (320, 65131), (341, 61120), (352, 59210), (382, 54560), (440, 47368), (496, 42020), (620, 33616), (682, 30560), (704, 29605), (764, 27280), (880, 23684), (955, 21824), (992, 21010), (1240, 16808), (1364, 15280), (1528, 13640), (1705, 12224), (1760, 11842), (1910, 10912), (1984, 10505), (2101, 9920), (2480, 8404), (2728, 7640), (3056, 6820), (3410, 6112), (3520, 5921), (3820, 5456), (4202, 4960)]