21583980

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{11}}^2\times {\mathrm{991}}^1$

素因数の和:1028

約数の個数: 108

約数和(自身を含む): 72037056

約数和(自身を除く): 50453076

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 11, 12, 15, 18, 20, 22, 30, 33, 36, 44, 45, 55, 60, 66, 90, 99, 110, 121, 132, 165, 180, 198, 220, 242, 330, 363, 396, 484, 495, 605, 660, 726, 990, 991, 1089, 1210, 1452, 1815, 1980, 1982, 2178, 2420, 2973, 3630, 3964, 4356, 4955, 5445, 5946, 7260, 8919, 9910, 10890, 10901, 11892, 14865, 17838, 19820, 21780, 21802, 29730, 32703, 35676, 43604, 44595, 54505, 59460, 65406, 89190, 98109, 109010, 119911, 130812, 163515, 178380, 196218, 218020, 239822, 327030, 359733, 392436, 479644, 490545, 599555, 654060, 719466, 981090, 1079199, 1199110, 1438932, 1798665, 1962180, 2158398, 2398220, 3597330, 4316796, 5395995, 7194660, 10791990, 21583980]

約数ペア:

[(1, 21583980), (2, 10791990), (3, 7194660), (4, 5395995), (5, 4316796), (6, 3597330), (9, 2398220), (10, 2158398), (11, 1962180), (12, 1798665), (15, 1438932), (18, 1199110), (20, 1079199), (22, 981090), (30, 719466), (33, 654060), (36, 599555), (44, 490545), (45, 479644), (55, 392436), (60, 359733), (66, 327030), (90, 239822), (99, 218020), (110, 196218), (121, 178380), (132, 163515), (165, 130812), (180, 119911), (198, 109010), (220, 98109), (242, 89190), (330, 65406), (363, 59460), (396, 54505), (484, 44595), (495, 43604), (605, 35676), (660, 32703), (726, 29730), (990, 21802), (991, 21780), (1089, 19820), (1210, 17838), (1452, 14865), (1815, 11892), (1980, 10901), (1982, 10890), (2178, 9910), (2420, 8919), (2973, 7260), (3630, 5946), (3964, 5445), (4356, 4955)]