31434520

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{991}}^1$

素因数の和:1076

約数の個数: 64

約数和(自身を含む): 77495040

約数和(自身を除く): 46060520

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 61, 65, 104, 122, 130, 244, 260, 305, 488, 520, 610, 793, 991, 1220, 1586, 1982, 2440, 3172, 3964, 3965, 4955, 6344, 7928, 7930, 9910, 12883, 15860, 19820, 25766, 31720, 39640, 51532, 60451, 64415, 103064, 120902, 128830, 241804, 257660, 302255, 483608, 515320, 604510, 785863, 1209020, 1571726, 2418040, 3143452, 3929315, 6286904, 7858630, 15717260, 31434520]

約数ペア:

[(1, 31434520), (2, 15717260), (4, 7858630), (5, 6286904), (8, 3929315), (10, 3143452), (13, 2418040), (20, 1571726), (26, 1209020), (40, 785863), (52, 604510), (61, 515320), (65, 483608), (104, 302255), (122, 257660), (130, 241804), (244, 128830), (260, 120902), (305, 103064), (488, 64415), (520, 60451), (610, 51532), (793, 39640), (991, 31720), (1220, 25766), (1586, 19820), (1982, 15860), (2440, 12883), (3172, 9910), (3964, 7930), (3965, 7928), (4955, 6344)]