30907000

素因数分解:

$2^3\times 5^3\times {\mathrm{31}}^1\times {\mathrm{997}}^1$

素因数の和:1049

約数の個数: 64

約数和(自身を含む): 74730240

約数和(自身を除く): 43823240

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 31, 40, 50, 62, 100, 124, 125, 155, 200, 248, 250, 310, 500, 620, 775, 997, 1000, 1240, 1550, 1994, 3100, 3875, 3988, 4985, 6200, 7750, 7976, 9970, 15500, 19940, 24925, 30907, 31000, 39880, 49850, 61814, 99700, 123628, 124625, 154535, 199400, 247256, 249250, 309070, 498500, 618140, 772675, 997000, 1236280, 1545350, 3090700, 3863375, 6181400, 7726750, 15453500, 30907000]

約数ペア:

[(1, 30907000), (2, 15453500), (4, 7726750), (5, 6181400), (8, 3863375), (10, 3090700), (20, 1545350), (25, 1236280), (31, 997000), (40, 772675), (50, 618140), (62, 498500), (100, 309070), (124, 249250), (125, 247256), (155, 199400), (200, 154535), (248, 124625), (250, 123628), (310, 99700), (500, 61814), (620, 49850), (775, 39880), (997, 31000), (1000, 30907), (1240, 24925), (1550, 19940), (1994, 15500), (3100, 9970), (3875, 7976), (3988, 7750), (4985, 6200)]