21319320

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{521}}^1$

素因数の和:577

約数の個数: 128

約数和(自身を含む): 72161280

約数和(自身を除く): 50841960

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 11, 12, 15, 20, 22, 24, 30, 31, 33, 40, 44, 55, 60, 62, 66, 88, 93, 110, 120, 124, 132, 155, 165, 186, 220, 248, 264, 310, 330, 341, 372, 440, 465, 521, 620, 660, 682, 744, 930, 1023, 1042, 1240, 1320, 1364, 1563, 1705, 1860, 2046, 2084, 2605, 2728, 3126, 3410, 3720, 4092, 4168, 5115, 5210, 5731, 6252, 6820, 7815, 8184, 10230, 10420, 11462, 12504, 13640, 15630, 16151, 17193, 20460, 20840, 22924, 28655, 31260, 32302, 34386, 40920, 45848, 48453, 57310, 62520, 64604, 68772, 80755, 85965, 96906, 114620, 129208, 137544, 161510, 171930, 177661, 193812, 229240, 242265, 323020, 343860, 355322, 387624, 484530, 532983, 646040, 687720, 710644, 888305, 969060, 1065966, 1421288, 1776610, 1938120, 2131932, 2664915, 3553220, 4263864, 5329830, 7106440, 10659660, 21319320]

約数ペア:

[(1, 21319320), (2, 10659660), (3, 7106440), (4, 5329830), (5, 4263864), (6, 3553220), (8, 2664915), (10, 2131932), (11, 1938120), (12, 1776610), (15, 1421288), (20, 1065966), (22, 969060), (24, 888305), (30, 710644), (31, 687720), (33, 646040), (40, 532983), (44, 484530), (55, 387624), (60, 355322), (62, 343860), (66, 323020), (88, 242265), (93, 229240), (110, 193812), (120, 177661), (124, 171930), (132, 161510), (155, 137544), (165, 129208), (186, 114620), (220, 96906), (248, 85965), (264, 80755), (310, 68772), (330, 64604), (341, 62520), (372, 57310), (440, 48453), (465, 45848), (521, 40920), (620, 34386), (660, 32302), (682, 31260), (744, 28655), (930, 22924), (1023, 20840), (1042, 20460), (1240, 17193), (1320, 16151), (1364, 15630), (1563, 13640), (1705, 12504), (1860, 11462), (2046, 10420), (2084, 10230), (2605, 8184), (2728, 7815), (3126, 6820), (3410, 6252), (3720, 5731), (4092, 5210), (4168, 5115)]