21664260

素因数分解:

$2^2\times 3^4\times 5^1\times {\mathrm{43}}^1\times {\mathrm{311}}^1$

素因数の和:375

約数の個数: 120

約数和(自身を含む): 69765696

約数和(自身を除く): 48101436

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 27, 30, 36, 43, 45, 54, 60, 81, 86, 90, 108, 129, 135, 162, 172, 180, 215, 258, 270, 311, 324, 387, 405, 430, 516, 540, 622, 645, 774, 810, 860, 933, 1161, 1244, 1290, 1548, 1555, 1620, 1866, 1935, 2322, 2580, 2799, 3110, 3483, 3732, 3870, 4644, 4665, 5598, 5805, 6220, 6966, 7740, 8397, 9330, 11196, 11610, 13373, 13932, 13995, 16794, 17415, 18660, 23220, 25191, 26746, 27990, 33588, 34830, 40119, 41985, 50382, 53492, 55980, 66865, 69660, 80238, 83970, 100764, 120357, 125955, 133730, 160476, 167940, 200595, 240714, 251910, 267460, 361071, 401190, 481428, 503820, 601785, 722142, 802380, 1083213, 1203570, 1444284, 1805355, 2166426, 2407140, 3610710, 4332852, 5416065, 7221420, 10832130, 21664260]

約数ペア:

[(1, 21664260), (2, 10832130), (3, 7221420), (4, 5416065), (5, 4332852), (6, 3610710), (9, 2407140), (10, 2166426), (12, 1805355), (15, 1444284), (18, 1203570), (20, 1083213), (27, 802380), (30, 722142), (36, 601785), (43, 503820), (45, 481428), (54, 401190), (60, 361071), (81, 267460), (86, 251910), (90, 240714), (108, 200595), (129, 167940), (135, 160476), (162, 133730), (172, 125955), (180, 120357), (215, 100764), (258, 83970), (270, 80238), (311, 69660), (324, 66865), (387, 55980), (405, 53492), (430, 50382), (516, 41985), (540, 40119), (622, 34830), (645, 33588), (774, 27990), (810, 26746), (860, 25191), (933, 23220), (1161, 18660), (1244, 17415), (1290, 16794), (1548, 13995), (1555, 13932), (1620, 13373), (1866, 11610), (1935, 11196), (2322, 9330), (2580, 8397), (2799, 7740), (3110, 6966), (3483, 6220), (3732, 5805), (3870, 5598), (4644, 4665)]