21423480

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{443}}^1$

素因数の和:501

約数の個数: 128

約数和(自身を含む): 71608320

約数和(自身を除く): 50184840

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 20, 24, 26, 30, 31, 39, 40, 52, 60, 62, 65, 78, 93, 104, 120, 124, 130, 155, 156, 186, 195, 248, 260, 310, 312, 372, 390, 403, 443, 465, 520, 620, 744, 780, 806, 886, 930, 1209, 1240, 1329, 1560, 1612, 1772, 1860, 2015, 2215, 2418, 2658, 3224, 3544, 3720, 4030, 4430, 4836, 5316, 5759, 6045, 6645, 8060, 8860, 9672, 10632, 11518, 12090, 13290, 13733, 16120, 17277, 17720, 23036, 24180, 26580, 27466, 28795, 34554, 41199, 46072, 48360, 53160, 54932, 57590, 68665, 69108, 82398, 86385, 109864, 115180, 137330, 138216, 164796, 172770, 178529, 205995, 230360, 274660, 329592, 345540, 357058, 411990, 535587, 549320, 691080, 714116, 823980, 892645, 1071174, 1428232, 1647960, 1785290, 2142348, 2677935, 3570580, 4284696, 5355870, 7141160, 10711740, 21423480]

約数ペア:

[(1, 21423480), (2, 10711740), (3, 7141160), (4, 5355870), (5, 4284696), (6, 3570580), (8, 2677935), (10, 2142348), (12, 1785290), (13, 1647960), (15, 1428232), (20, 1071174), (24, 892645), (26, 823980), (30, 714116), (31, 691080), (39, 549320), (40, 535587), (52, 411990), (60, 357058), (62, 345540), (65, 329592), (78, 274660), (93, 230360), (104, 205995), (120, 178529), (124, 172770), (130, 164796), (155, 138216), (156, 137330), (186, 115180), (195, 109864), (248, 86385), (260, 82398), (310, 69108), (312, 68665), (372, 57590), (390, 54932), (403, 53160), (443, 48360), (465, 46072), (520, 41199), (620, 34554), (744, 28795), (780, 27466), (806, 26580), (886, 24180), (930, 23036), (1209, 17720), (1240, 17277), (1329, 16120), (1560, 13733), (1612, 13290), (1772, 12090), (1860, 11518), (2015, 10632), (2215, 9672), (2418, 8860), (2658, 8060), (3224, 6645), (3544, 6045), (3720, 5759), (4030, 5316), (4430, 4836)]