3917780

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{71}}^1\times {\mathrm{89}}^1$

素因数の和:200

約数の個数: 48

約数和(自身を含む): 8709120

約数和(自身を除く): 4791340

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 71, 89, 124, 142, 155, 178, 284, 310, 355, 356, 445, 620, 710, 890, 1420, 1780, 2201, 2759, 4402, 5518, 6319, 8804, 11005, 11036, 12638, 13795, 22010, 25276, 27590, 31595, 44020, 55180, 63190, 126380, 195889, 391778, 783556, 979445, 1958890, 3917780]

約数ペア:

[(1, 3917780), (2, 1958890), (4, 979445), (5, 783556), (10, 391778), (20, 195889), (31, 126380), (62, 63190), (71, 55180), (89, 44020), (124, 31595), (142, 27590), (155, 25276), (178, 22010), (284, 13795), (310, 12638), (355, 11036), (356, 11005), (445, 8804), (620, 6319), (710, 5518), (890, 4402), (1420, 2759), (1780, 2201)]