31213156

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{17}}^2\times {\mathrm{31}}^1\times {\mathrm{67}}^1$

素因数の和:149

約数の個数: 72

約数和(自身を含む): 65467136

約数和(自身を除く): 34253980

約数列:

[1, 2, 4, 13, 17, 26, 31, 34, 52, 62, 67, 68, 124, 134, 221, 268, 289, 403, 442, 527, 578, 806, 871, 884, 1054, 1139, 1156, 1612, 1742, 2077, 2108, 2278, 3484, 3757, 4154, 4556, 6851, 7514, 8308, 8959, 13702, 14807, 15028, 17918, 19363, 27001, 27404, 29614, 35309, 35836, 38726, 54002, 59228, 70618, 77452, 108004, 116467, 141236, 232934, 251719, 459017, 465868, 503438, 600253, 918034, 1006876, 1200506, 1836068, 2401012, 7803289, 15606578, 31213156]

約数ペア:

[(1, 31213156), (2, 15606578), (4, 7803289), (13, 2401012), (17, 1836068), (26, 1200506), (31, 1006876), (34, 918034), (52, 600253), (62, 503438), (67, 465868), (68, 459017), (124, 251719), (134, 232934), (221, 141236), (268, 116467), (289, 108004), (403, 77452), (442, 70618), (527, 59228), (578, 54002), (806, 38726), (871, 35836), (884, 35309), (1054, 29614), (1139, 27404), (1156, 27001), (1612, 19363), (1742, 17918), (2077, 15028), (2108, 14807), (2278, 13702), (3484, 8959), (3757, 8308), (4154, 7514), (4556, 6851)]