158984120

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{128213}}^1$

素因数の和:128255

約数の個数: 32

約数和(自身を含む): 369256320

約数和(自身を除く): 210272200

約数列:

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

約数ペア:

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