81315480

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{21859}}^1$

素因数の和:21904

約数の個数: 64

約数和(自身を含む): 251827200

約数和(自身を除く): 170511720

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 31, 40, 60, 62, 93, 120, 124, 155, 186, 248, 310, 372, 465, 620, 744, 930, 1240, 1860, 3720, 21859, 43718, 65577, 87436, 109295, 131154, 174872, 218590, 262308, 327885, 437180, 524616, 655770, 677629, 874360, 1311540, 1355258, 2032887, 2623080, 2710516, 3388145, 4065774, 5421032, 6776290, 8131548, 10164435, 13552580, 16263096, 20328870, 27105160, 40657740, 81315480]

約数ペア:

[(1, 81315480), (2, 40657740), (3, 27105160), (4, 20328870), (5, 16263096), (6, 13552580), (8, 10164435), (10, 8131548), (12, 6776290), (15, 5421032), (20, 4065774), (24, 3388145), (30, 2710516), (31, 2623080), (40, 2032887), (60, 1355258), (62, 1311540), (93, 874360), (120, 677629), (124, 655770), (155, 524616), (186, 437180), (248, 327885), (310, 262308), (372, 218590), (465, 174872), (620, 131154), (744, 109295), (930, 87436), (1240, 65577), (1860, 43718), (3720, 21859)]