31949840

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{991}}^1$

素因数の和:1048

約数の個数: 80

約数和(自身を含む): 82661376

約数和(自身を除く): 50711536

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 31, 40, 52, 62, 65, 80, 104, 124, 130, 155, 208, 248, 260, 310, 403, 496, 520, 620, 806, 991, 1040, 1240, 1612, 1982, 2015, 2480, 3224, 3964, 4030, 4955, 6448, 7928, 8060, 9910, 12883, 15856, 16120, 19820, 25766, 30721, 32240, 39640, 51532, 61442, 64415, 79280, 103064, 122884, 128830, 153605, 206128, 245768, 257660, 307210, 399373, 491536, 515320, 614420, 798746, 1030640, 1228840, 1597492, 1996865, 2457680, 3194984, 3993730, 6389968, 7987460, 15974920, 31949840]

約数ペア:

[(1, 31949840), (2, 15974920), (4, 7987460), (5, 6389968), (8, 3993730), (10, 3194984), (13, 2457680), (16, 1996865), (20, 1597492), (26, 1228840), (31, 1030640), (40, 798746), (52, 614420), (62, 515320), (65, 491536), (80, 399373), (104, 307210), (124, 257660), (130, 245768), (155, 206128), (208, 153605), (248, 128830), (260, 122884), (310, 103064), (403, 79280), (496, 64415), (520, 61442), (620, 51532), (806, 39640), (991, 32240), (1040, 30721), (1240, 25766), (1612, 19820), (1982, 16120), (2015, 15856), (2480, 12883), (3224, 9910), (3964, 8060), (4030, 7928), (4955, 6448)]