21981336

素因数分解:

$2^3\times 3^1\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{1499}}^1$

素因数の和:1568

約数の個数: 64

約数和(自身を含む): 60480000

約数和(自身を除く): 38498664

約数列:

[1, 2, 3, 4, 6, 8, 12, 13, 24, 26, 39, 47, 52, 78, 94, 104, 141, 156, 188, 282, 312, 376, 564, 611, 1128, 1222, 1499, 1833, 2444, 2998, 3666, 4497, 4888, 5996, 7332, 8994, 11992, 14664, 17988, 19487, 35976, 38974, 58461, 70453, 77948, 116922, 140906, 155896, 211359, 233844, 281812, 422718, 467688, 563624, 845436, 915889, 1690872, 1831778, 2747667, 3663556, 5495334, 7327112, 10990668, 21981336]

約数ペア:

[(1, 21981336), (2, 10990668), (3, 7327112), (4, 5495334), (6, 3663556), (8, 2747667), (12, 1831778), (13, 1690872), (24, 915889), (26, 845436), (39, 563624), (47, 467688), (52, 422718), (78, 281812), (94, 233844), (104, 211359), (141, 155896), (156, 140906), (188, 116922), (282, 77948), (312, 70453), (376, 58461), (564, 38974), (611, 35976), (1128, 19487), (1222, 17988), (1499, 14664), (1833, 11992), (2444, 8994), (2998, 7332), (3666, 5996), (4497, 4888)]