79481980

素因数分解:

$2^2\times 5^1\times {\mathrm{53}}^1\times {\mathrm{167}}^1\times {\mathrm{449}}^1$

素因数の和:678

約数の個数: 48

約数和(自身を含む): 171460800

約数和(自身を除く): 91978820

約数列:

[1, 2, 4, 5, 10, 20, 53, 106, 167, 212, 265, 334, 449, 530, 668, 835, 898, 1060, 1670, 1796, 2245, 3340, 4490, 8851, 8980, 17702, 23797, 35404, 44255, 47594, 74983, 88510, 95188, 118985, 149966, 177020, 237970, 299932, 374915, 475940, 749830, 1499660, 3974099, 7948198, 15896396, 19870495, 39740990, 79481980]

約数ペア:

[(1, 79481980), (2, 39740990), (4, 19870495), (5, 15896396), (10, 7948198), (20, 3974099), (53, 1499660), (106, 749830), (167, 475940), (212, 374915), (265, 299932), (334, 237970), (449, 177020), (530, 149966), (668, 118985), (835, 95188), (898, 88510), (1060, 74983), (1670, 47594), (1796, 44255), (2245, 35404), (3340, 23797), (4490, 17702), (8851, 8980)]