19651760

素因数分解:

$2^4\times 5^1\times {\mathrm{61}}^1\times {\mathrm{4027}}^1$

素因数の和:4101

約数の個数: 40

約数和(自身を含む): 46450896

約数和(自身を除く): 26799136

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 61, 80, 122, 244, 305, 488, 610, 976, 1220, 2440, 4027, 4880, 8054, 16108, 20135, 32216, 40270, 64432, 80540, 161080, 245647, 322160, 491294, 982588, 1228235, 1965176, 2456470, 3930352, 4912940, 9825880, 19651760]

約数ペア:

[(1, 19651760), (2, 9825880), (4, 4912940), (5, 3930352), (8, 2456470), (10, 1965176), (16, 1228235), (20, 982588), (40, 491294), (61, 322160), (80, 245647), (122, 161080), (244, 80540), (305, 64432), (488, 40270), (610, 32216), (976, 20135), (1220, 16108), (2440, 8054), (4027, 4880)]