879393580

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{991}}^1\times {\mathrm{3413}}^1$

素因数の和:4426

約数の個数: 48

約数和(自身を含む): 1991372544

約数和(自身を除く): 1111978964

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 991, 1982, 3413, 3964, 4955, 6826, 9910, 12883, 13652, 17065, 19820, 25766, 34130, 44369, 51532, 64415, 68260, 88738, 128830, 177476, 221845, 257660, 443690, 887380, 3382283, 6764566, 13529132, 16911415, 33822830, 43969679, 67645660, 87939358, 175878716, 219848395, 439696790, 879393580]

約数ペア:

[(1, 879393580), (2, 439696790), (4, 219848395), (5, 175878716), (10, 87939358), (13, 67645660), (20, 43969679), (26, 33822830), (52, 16911415), (65, 13529132), (130, 6764566), (260, 3382283), (991, 887380), (1982, 443690), (3413, 257660), (3964, 221845), (4955, 177476), (6826, 128830), (9910, 88738), (12883, 68260), (13652, 64415), (17065, 51532), (19820, 44369), (25766, 34130)]