15974920

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{991}}^1$

素因数の和:1046

約数の個数: 64

約数和(自身を含む): 39997440

約数和(自身を除く): 24022520

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 31, 40, 52, 62, 65, 104, 124, 130, 155, 248, 260, 310, 403, 520, 620, 806, 991, 1240, 1612, 1982, 2015, 3224, 3964, 4030, 4955, 7928, 8060, 9910, 12883, 16120, 19820, 25766, 30721, 39640, 51532, 61442, 64415, 103064, 122884, 128830, 153605, 245768, 257660, 307210, 399373, 515320, 614420, 798746, 1228840, 1597492, 1996865, 3194984, 3993730, 7987460, 15974920]

約数ペア:

[(1, 15974920), (2, 7987460), (4, 3993730), (5, 3194984), (8, 1996865), (10, 1597492), (13, 1228840), (20, 798746), (26, 614420), (31, 515320), (40, 399373), (52, 307210), (62, 257660), (65, 245768), (104, 153605), (124, 128830), (130, 122884), (155, 103064), (248, 64415), (260, 61442), (310, 51532), (403, 39640), (520, 30721), (620, 25766), (806, 19820), (991, 16120), (1240, 12883), (1612, 9910), (1982, 8060), (2015, 7928), (3224, 4955), (3964, 4030)]