1998939560

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{491}}^1\times {\mathrm{5987}}^1$

素因数の和:6506

約数の個数: 64

約数和(自身を含む): 4772675520

約数和(自身を除く): 2773735960

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 68, 85, 136, 170, 340, 491, 680, 982, 1964, 2455, 3928, 4910, 5987, 8347, 9820, 11974, 16694, 19640, 23948, 29935, 33388, 41735, 47896, 59870, 66776, 83470, 101779, 119740, 166940, 203558, 239480, 333880, 407116, 508895, 814232, 1017790, 2035580, 2939617, 4071160, 5879234, 11758468, 14698085, 23516936, 29396170, 49973489, 58792340, 99946978, 117584680, 199893956, 249867445, 399787912, 499734890, 999469780, 1998939560]

約数ペア:

[(1, 1998939560), (2, 999469780), (4, 499734890), (5, 399787912), (8, 249867445), (10, 199893956), (17, 117584680), (20, 99946978), (34, 58792340), (40, 49973489), (68, 29396170), (85, 23516936), (136, 14698085), (170, 11758468), (340, 5879234), (491, 4071160), (680, 2939617), (982, 2035580), (1964, 1017790), (2455, 814232), (3928, 508895), (4910, 407116), (5987, 333880), (8347, 239480), (9820, 203558), (11974, 166940), (16694, 119740), (19640, 101779), (23948, 83470), (29935, 66776), (33388, 59870), (41735, 47896)]