72891440

素因数分解:

$2^4\times 5^1\times {\mathrm{41}}^1\times {\mathrm{71}}^1\times {\mathrm{313}}^1$

素因数の和:438

約数の個数: 80

約数和(自身を含む): 176613696

約数和(自身を除く): 103722256

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 41, 71, 80, 82, 142, 164, 205, 284, 313, 328, 355, 410, 568, 626, 656, 710, 820, 1136, 1252, 1420, 1565, 1640, 2504, 2840, 2911, 3130, 3280, 5008, 5680, 5822, 6260, 11644, 12520, 12833, 14555, 22223, 23288, 25040, 25666, 29110, 44446, 46576, 51332, 58220, 64165, 88892, 102664, 111115, 116440, 128330, 177784, 205328, 222230, 232880, 256660, 355568, 444460, 513320, 888920, 911143, 1026640, 1777840, 1822286, 3644572, 4555715, 7289144, 9111430, 14578288, 18222860, 36445720, 72891440]

約数ペア:

[(1, 72891440), (2, 36445720), (4, 18222860), (5, 14578288), (8, 9111430), (10, 7289144), (16, 4555715), (20, 3644572), (40, 1822286), (41, 1777840), (71, 1026640), (80, 911143), (82, 888920), (142, 513320), (164, 444460), (205, 355568), (284, 256660), (313, 232880), (328, 222230), (355, 205328), (410, 177784), (568, 128330), (626, 116440), (656, 111115), (710, 102664), (820, 88892), (1136, 64165), (1252, 58220), (1420, 51332), (1565, 46576), (1640, 44446), (2504, 29110), (2840, 25666), (2911, 25040), (3130, 23288), (3280, 22223), (5008, 14555), (5680, 12833), (5822, 12520), (6260, 11644)]