21620556

素因数分解:

$2^2\times 3^2\times {\mathrm{19}}^1\times {\mathrm{73}}^1\times {\mathrm{433}}^1$

素因数の和:535

約数の個数: 72

約数和(自身を含む): 58451120

約数和(自身を除く): 36830564

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 19, 36, 38, 57, 73, 76, 114, 146, 171, 219, 228, 292, 342, 433, 438, 657, 684, 866, 876, 1299, 1314, 1387, 1732, 2598, 2628, 2774, 3897, 4161, 5196, 5548, 7794, 8227, 8322, 12483, 15588, 16454, 16644, 24681, 24966, 31609, 32908, 49362, 49932, 63218, 74043, 94827, 98724, 126436, 148086, 189654, 284481, 296172, 379308, 568962, 600571, 1137924, 1201142, 1801713, 2402284, 3603426, 5405139, 7206852, 10810278, 21620556]

約数ペア:

[(1, 21620556), (2, 10810278), (3, 7206852), (4, 5405139), (6, 3603426), (9, 2402284), (12, 1801713), (18, 1201142), (19, 1137924), (36, 600571), (38, 568962), (57, 379308), (73, 296172), (76, 284481), (114, 189654), (146, 148086), (171, 126436), (219, 98724), (228, 94827), (292, 74043), (342, 63218), (433, 49932), (438, 49362), (657, 32908), (684, 31609), (866, 24966), (876, 24681), (1299, 16644), (1314, 16454), (1387, 15588), (1732, 12483), (2598, 8322), (2628, 8227), (2774, 7794), (3897, 5548), (4161, 5196)]