21181524

素因数分解:

$2^2\times 3^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{163}}^1$

素因数の和:214

約数の個数: 144

約数和(自身を含む): 65959488

約数和(自身を除く): 44777964

約数列:

[1, 2, 3, 4, 6, 7, 12, 13, 14, 17, 21, 26, 28, 34, 39, 42, 49, 51, 52, 68, 78, 84, 91, 98, 102, 119, 147, 156, 163, 182, 196, 204, 221, 238, 273, 294, 326, 357, 364, 442, 476, 489, 546, 588, 637, 652, 663, 714, 833, 884, 978, 1092, 1141, 1274, 1326, 1428, 1547, 1666, 1911, 1956, 2119, 2282, 2499, 2548, 2652, 2771, 3094, 3332, 3423, 3822, 4238, 4564, 4641, 4998, 5542, 6188, 6357, 6846, 7644, 7987, 8313, 8476, 9282, 9996, 10829, 11084, 12714, 13692, 14833, 15974, 16626, 18564, 19397, 21658, 23961, 25428, 29666, 31948, 32487, 33252, 36023, 38794, 43316, 44499, 47922, 58191, 59332, 64974, 72046, 77588, 88998, 95844, 103831, 108069, 116382, 129948, 135779, 144092, 177996, 207662, 216138, 232764, 252161, 271558, 311493, 407337, 415324, 432276, 504322, 543116, 622986, 756483, 814674, 1008644, 1245972, 1512966, 1629348, 1765127, 3025932, 3530254, 5295381, 7060508, 10590762, 21181524]

約数ペア:

[(1, 21181524), (2, 10590762), (3, 7060508), (4, 5295381), (6, 3530254), (7, 3025932), (12, 1765127), (13, 1629348), (14, 1512966), (17, 1245972), (21, 1008644), (26, 814674), (28, 756483), (34, 622986), (39, 543116), (42, 504322), (49, 432276), (51, 415324), (52, 407337), (68, 311493), (78, 271558), (84, 252161), (91, 232764), (98, 216138), (102, 207662), (119, 177996), (147, 144092), (156, 135779), (163, 129948), (182, 116382), (196, 108069), (204, 103831), (221, 95844), (238, 88998), (273, 77588), (294, 72046), (326, 64974), (357, 59332), (364, 58191), (442, 47922), (476, 44499), (489, 43316), (546, 38794), (588, 36023), (637, 33252), (652, 32487), (663, 31948), (714, 29666), (833, 25428), (884, 23961), (978, 21658), (1092, 19397), (1141, 18564), (1274, 16626), (1326, 15974), (1428, 14833), (1547, 13692), (1666, 12714), (1911, 11084), (1956, 10829), (2119, 9996), (2282, 9282), (2499, 8476), (2548, 8313), (2652, 7987), (2771, 7644), (3094, 6846), (3332, 6357), (3423, 6188), (3822, 5542), (4238, 4998), (4564, 4641)]