21388416

素因数分解:

$2^7\times 3^1\times 7^1\times {\mathrm{73}}^1\times {\mathrm{109}}^1$

素因数の和:206

約数の個数: 128

約数和(自身を含む): 66422400

約数和(自身を除く): 45033984

約数列:

[1, 2, 3, 4, 6, 7, 8, 12, 14, 16, 21, 24, 28, 32, 42, 48, 56, 64, 73, 84, 96, 109, 112, 128, 146, 168, 192, 218, 219, 224, 292, 327, 336, 384, 436, 438, 448, 511, 584, 654, 672, 763, 872, 876, 896, 1022, 1168, 1308, 1344, 1526, 1533, 1744, 1752, 2044, 2289, 2336, 2616, 2688, 3052, 3066, 3488, 3504, 4088, 4578, 4672, 5232, 6104, 6132, 6976, 7008, 7957, 8176, 9156, 9344, 10464, 12208, 12264, 13952, 14016, 15914, 16352, 18312, 20928, 23871, 24416, 24528, 28032, 31828, 32704, 36624, 41856, 47742, 48832, 49056, 55699, 63656, 65408, 73248, 95484, 97664, 98112, 111398, 127312, 146496, 167097, 190968, 196224, 222796, 254624, 292992, 334194, 381936, 445592, 509248, 668388, 763872, 891184, 1018496, 1336776, 1527744, 1782368, 2673552, 3055488, 3564736, 5347104, 7129472, 10694208, 21388416]

約数ペア:

[(1, 21388416), (2, 10694208), (3, 7129472), (4, 5347104), (6, 3564736), (7, 3055488), (8, 2673552), (12, 1782368), (14, 1527744), (16, 1336776), (21, 1018496), (24, 891184), (28, 763872), (32, 668388), (42, 509248), (48, 445592), (56, 381936), (64, 334194), (73, 292992), (84, 254624), (96, 222796), (109, 196224), (112, 190968), (128, 167097), (146, 146496), (168, 127312), (192, 111398), (218, 98112), (219, 97664), (224, 95484), (292, 73248), (327, 65408), (336, 63656), (384, 55699), (436, 49056), (438, 48832), (448, 47742), (511, 41856), (584, 36624), (654, 32704), (672, 31828), (763, 28032), (872, 24528), (876, 24416), (896, 23871), (1022, 20928), (1168, 18312), (1308, 16352), (1344, 15914), (1526, 14016), (1533, 13952), (1744, 12264), (1752, 12208), (2044, 10464), (2289, 9344), (2336, 9156), (2616, 8176), (2688, 7957), (3052, 7008), (3066, 6976), (3488, 6132), (3504, 6104), (4088, 5232), (4578, 4672)]