245097020

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{383}}^1\times {\mathrm{653}}^1$

素因数の和:1059

約数の個数: 72

約数和(自身を含む): 601219584

約数和(自身を除く): 356122564

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 383, 490, 653, 766, 980, 1306, 1532, 1915, 2612, 2681, 3265, 3830, 4571, 5362, 6530, 7660, 9142, 10724, 13060, 13405, 18284, 18767, 22855, 26810, 31997, 37534, 45710, 53620, 63994, 75068, 91420, 93835, 127988, 159985, 187670, 250099, 319970, 375340, 500198, 639940, 1000396, 1250495, 1750693, 2500990, 3501386, 5001980, 7002772, 8753465, 12254851, 17506930, 24509702, 35013860, 49019404, 61274255, 122548510, 245097020]

約数ペア:

[(1, 245097020), (2, 122548510), (4, 61274255), (5, 49019404), (7, 35013860), (10, 24509702), (14, 17506930), (20, 12254851), (28, 8753465), (35, 7002772), (49, 5001980), (70, 3501386), (98, 2500990), (140, 1750693), (196, 1250495), (245, 1000396), (383, 639940), (490, 500198), (653, 375340), (766, 319970), (980, 250099), (1306, 187670), (1532, 159985), (1915, 127988), (2612, 93835), (2681, 91420), (3265, 75068), (3830, 63994), (4571, 53620), (5362, 45710), (6530, 37534), (7660, 31997), (9142, 26810), (10724, 22855), (13060, 18767), (13405, 18284)]