646908680

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{907}}^1\times {\mathrm{1621}}^1$

素因数の和:2550

約数の個数: 64

約数和(自身を含む): 1590598080

約数和(自身を除く): 943689400

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 440, 907, 1621, 1814, 3242, 3628, 4535, 6484, 7256, 8105, 9070, 9977, 12968, 16210, 17831, 18140, 19954, 32420, 35662, 36280, 39908, 49885, 64840, 71324, 79816, 89155, 99770, 142648, 178310, 199540, 356620, 399080, 713240, 1470247, 2940494, 5880988, 7351235, 11761976, 14702470, 16172717, 29404940, 32345434, 58809880, 64690868, 80863585, 129381736, 161727170, 323454340, 646908680]

約数ペア:

[(1, 646908680), (2, 323454340), (4, 161727170), (5, 129381736), (8, 80863585), (10, 64690868), (11, 58809880), (20, 32345434), (22, 29404940), (40, 16172717), (44, 14702470), (55, 11761976), (88, 7351235), (110, 5880988), (220, 2940494), (440, 1470247), (907, 713240), (1621, 399080), (1814, 356620), (3242, 199540), (3628, 178310), (4535, 142648), (6484, 99770), (7256, 89155), (8105, 79816), (9070, 71324), (9977, 64840), (12968, 49885), (16210, 39908), (17831, 36280), (18140, 35662), (19954, 32420)]