12981320

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{163}}^1\times {\mathrm{181}}^1$

素因数の和:366

約数の個数: 64

約数和(自身を含む): 32235840

約数和(自身を除く): 19254520

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 163, 181, 220, 326, 362, 440, 652, 724, 815, 905, 1304, 1448, 1630, 1793, 1810, 1991, 3260, 3586, 3620, 3982, 6520, 7172, 7240, 7964, 8965, 9955, 14344, 15928, 17930, 19910, 29503, 35860, 39820, 59006, 71720, 79640, 118012, 147515, 236024, 295030, 324533, 590060, 649066, 1180120, 1298132, 1622665, 2596264, 3245330, 6490660, 12981320]

約数ペア:

[(1, 12981320), (2, 6490660), (4, 3245330), (5, 2596264), (8, 1622665), (10, 1298132), (11, 1180120), (20, 649066), (22, 590060), (40, 324533), (44, 295030), (55, 236024), (88, 147515), (110, 118012), (163, 79640), (181, 71720), (220, 59006), (326, 39820), (362, 35860), (440, 29503), (652, 19910), (724, 17930), (815, 15928), (905, 14344), (1304, 9955), (1448, 8965), (1630, 7964), (1793, 7240), (1810, 7172), (1991, 6520), (3260, 3982), (3586, 3620)]