19896760

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{83}}^1\times {\mathrm{461}}^1$

素因数の和:568

約数の個数: 64

約数和(自身を含む): 48898080

約数和(自身を除く): 29001320

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 83, 104, 130, 166, 260, 332, 415, 461, 520, 664, 830, 922, 1079, 1660, 1844, 2158, 2305, 3320, 3688, 4316, 4610, 5395, 5993, 8632, 9220, 10790, 11986, 18440, 21580, 23972, 29965, 38263, 43160, 47944, 59930, 76526, 119860, 153052, 191315, 239720, 306104, 382630, 497419, 765260, 994838, 1530520, 1989676, 2487095, 3979352, 4974190, 9948380, 19896760]

約数ペア:

[(1, 19896760), (2, 9948380), (4, 4974190), (5, 3979352), (8, 2487095), (10, 1989676), (13, 1530520), (20, 994838), (26, 765260), (40, 497419), (52, 382630), (65, 306104), (83, 239720), (104, 191315), (130, 153052), (166, 119860), (260, 76526), (332, 59930), (415, 47944), (461, 43160), (520, 38263), (664, 29965), (830, 23972), (922, 21580), (1079, 18440), (1660, 11986), (1844, 10790), (2158, 9220), (2305, 8632), (3320, 5993), (3688, 5395), (4316, 4610)]