19651569680

素因数分解:

$2^4\times 5^1\times {\mathrm{61}}^1\times {\mathrm{4026961}}^1$

素因数の和:4027035

約数の個数: 40

約数和(自身を含む): 46438925784

約数和(自身を除く): 26787356104

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 61, 80, 122, 244, 305, 488, 610, 976, 1220, 2440, 4880, 4026961, 8053922, 16107844, 20134805, 32215688, 40269610, 64431376, 80539220, 161078440, 245644621, 322156880, 491289242, 982578484, 1228223105, 1965156968, 2456446210, 3930313936, 4912892420, 9825784840, 19651569680]

約数ペア:

[(1, 19651569680), (2, 9825784840), (4, 4912892420), (5, 3930313936), (8, 2456446210), (10, 1965156968), (16, 1228223105), (20, 982578484), (40, 491289242), (61, 322156880), (80, 245644621), (122, 161078440), (244, 80539220), (305, 64431376), (488, 40269610), (610, 32215688), (976, 20134805), (1220, 16107844), (2440, 8053922), (4880, 4026961)]