42731720

素因数分解:

$2^3\times 5^1\times {\mathrm{61}}^1\times {\mathrm{83}}^1\times {\mathrm{211}}^1$

素因数の和:366

約数の個数: 64

約数和(自身を含む): 99368640

約数和(自身を除く): 56636920

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 61, 83, 122, 166, 211, 244, 305, 332, 415, 422, 488, 610, 664, 830, 844, 1055, 1220, 1660, 1688, 2110, 2440, 3320, 4220, 5063, 8440, 10126, 12871, 17513, 20252, 25315, 25742, 35026, 40504, 50630, 51484, 64355, 70052, 87565, 101260, 102968, 128710, 140104, 175130, 202520, 257420, 350260, 514840, 700520, 1068293, 2136586, 4273172, 5341465, 8546344, 10682930, 21365860, 42731720]

約数ペア:

[(1, 42731720), (2, 21365860), (4, 10682930), (5, 8546344), (8, 5341465), (10, 4273172), (20, 2136586), (40, 1068293), (61, 700520), (83, 514840), (122, 350260), (166, 257420), (211, 202520), (244, 175130), (305, 140104), (332, 128710), (415, 102968), (422, 101260), (488, 87565), (610, 70052), (664, 64355), (830, 51484), (844, 50630), (1055, 40504), (1220, 35026), (1660, 25742), (1688, 25315), (2110, 20252), (2440, 17513), (3320, 12871), (4220, 10126), (5063, 8440)]