20408904

素因数分解:

$2^3\times 3^2\times {\mathrm{37}}^1\times {\mathrm{47}}^1\times {\mathrm{163}}^1$

素因数の和:259

約数の個数: 96

約数和(自身を含む): 58331520

約数和(自身を除く): 37922616

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 36, 37, 47, 72, 74, 94, 111, 141, 148, 163, 188, 222, 282, 296, 326, 333, 376, 423, 444, 489, 564, 652, 666, 846, 888, 978, 1128, 1304, 1332, 1467, 1692, 1739, 1956, 2664, 2934, 3384, 3478, 3912, 5217, 5868, 6031, 6956, 7661, 10434, 11736, 12062, 13912, 15322, 15651, 18093, 20868, 22983, 24124, 30644, 31302, 36186, 41736, 45966, 48248, 54279, 61288, 62604, 68949, 72372, 91932, 108558, 125208, 137898, 144744, 183864, 217116, 275796, 283457, 434232, 551592, 566914, 850371, 1133828, 1700742, 2267656, 2551113, 3401484, 5102226, 6802968, 10204452, 20408904]

約数ペア:

[(1, 20408904), (2, 10204452), (3, 6802968), (4, 5102226), (6, 3401484), (8, 2551113), (9, 2267656), (12, 1700742), (18, 1133828), (24, 850371), (36, 566914), (37, 551592), (47, 434232), (72, 283457), (74, 275796), (94, 217116), (111, 183864), (141, 144744), (148, 137898), (163, 125208), (188, 108558), (222, 91932), (282, 72372), (296, 68949), (326, 62604), (333, 61288), (376, 54279), (423, 48248), (444, 45966), (489, 41736), (564, 36186), (652, 31302), (666, 30644), (846, 24124), (888, 22983), (978, 20868), (1128, 18093), (1304, 15651), (1332, 15322), (1467, 13912), (1692, 12062), (1739, 11736), (1956, 10434), (2664, 7661), (2934, 6956), (3384, 6031), (3478, 5868), (3912, 5217)]