1978473320

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{397}}^1\times {\mathrm{4019}}^1$

素因数の和:4458

約数の個数: 64

約数和(自身を含む): 4607884800

約数和(自身を除く): 2629411480

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 124, 155, 248, 310, 397, 620, 794, 1240, 1588, 1985, 3176, 3970, 4019, 7940, 8038, 12307, 15880, 16076, 20095, 24614, 32152, 40190, 49228, 61535, 80380, 98456, 123070, 124589, 160760, 246140, 249178, 492280, 498356, 622945, 996712, 1245890, 1595543, 2491780, 3191086, 4983560, 6382172, 7977715, 12764344, 15955430, 31910860, 49461833, 63821720, 98923666, 197847332, 247309165, 395694664, 494618330, 989236660, 1978473320]

約数ペア:

[(1, 1978473320), (2, 989236660), (4, 494618330), (5, 395694664), (8, 247309165), (10, 197847332), (20, 98923666), (31, 63821720), (40, 49461833), (62, 31910860), (124, 15955430), (155, 12764344), (248, 7977715), (310, 6382172), (397, 4983560), (620, 3191086), (794, 2491780), (1240, 1595543), (1588, 1245890), (1985, 996712), (3176, 622945), (3970, 498356), (4019, 492280), (7940, 249178), (8038, 246140), (12307, 160760), (15880, 124589), (16076, 123070), (20095, 98456), (24614, 80380), (32152, 61535), (40190, 49228)]