987568240

素因数分解:

$2^4\times 5^1\times {\mathrm{31}}^1\times {\mathrm{398213}}^1$

素因数の和:398257

約数の個数: 40

約数和(自身を含む): 2370169728

約数和(自身を除く): 1382601488

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 40, 62, 80, 124, 155, 248, 310, 496, 620, 1240, 2480, 398213, 796426, 1592852, 1991065, 3185704, 3982130, 6371408, 7964260, 12344603, 15928520, 24689206, 31857040, 49378412, 61723015, 98756824, 123446030, 197513648, 246892060, 493784120, 987568240]

約数ペア:

[(1, 987568240), (2, 493784120), (4, 246892060), (5, 197513648), (8, 123446030), (10, 98756824), (16, 61723015), (20, 49378412), (31, 31857040), (40, 24689206), (62, 15928520), (80, 12344603), (124, 7964260), (155, 6371408), (248, 3982130), (310, 3185704), (496, 1991065), (620, 1592852), (1240, 796426), (2480, 398213)]