7987460

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{991}}^1$

素因数の和:1044

約数の個数: 48

約数和(自身を含む): 18665472

約数和(自身を除く): 10678012

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 31, 52, 62, 65, 124, 130, 155, 260, 310, 403, 620, 806, 991, 1612, 1982, 2015, 3964, 4030, 4955, 8060, 9910, 12883, 19820, 25766, 30721, 51532, 61442, 64415, 122884, 128830, 153605, 257660, 307210, 399373, 614420, 798746, 1597492, 1996865, 3993730, 7987460]

約数ペア:

[(1, 7987460), (2, 3993730), (4, 1996865), (5, 1597492), (10, 798746), (13, 614420), (20, 399373), (26, 307210), (31, 257660), (52, 153605), (62, 128830), (65, 122884), (124, 64415), (130, 61442), (155, 51532), (260, 30721), (310, 25766), (403, 19820), (620, 12883), (806, 9910), (991, 8060), (1612, 4955), (1982, 4030), (2015, 3964)]