317968240

素因数分解:

$2^4\times 5^1\times {\mathrm{31}}^1\times {\mathrm{128213}}^1$

素因数の和:128257

約数の個数: 40

約数和(自身を含む): 763129728

約数和(自身を除く): 445161488

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 40, 62, 80, 124, 155, 248, 310, 496, 620, 1240, 2480, 128213, 256426, 512852, 641065, 1025704, 1282130, 2051408, 2564260, 3974603, 5128520, 7949206, 10257040, 15898412, 19873015, 31796824, 39746030, 63593648, 79492060, 158984120, 317968240]

約数ペア:

[(1, 317968240), (2, 158984120), (4, 79492060), (5, 63593648), (8, 39746030), (10, 31796824), (16, 19873015), (20, 15898412), (31, 10257040), (40, 7949206), (62, 5128520), (80, 3974603), (124, 2564260), (155, 2051408), (248, 1282130), (310, 1025704), (496, 641065), (620, 512852), (1240, 256426), (2480, 128213)]