21263508

素因数分解:

$2^2\times 3^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{4441}}^1$

素因数の和:4477

約数の個数: 72

約数和(自身を含む): 64675520

約数和(自身を除く): 43412012

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 19, 21, 28, 36, 38, 42, 57, 63, 76, 84, 114, 126, 133, 171, 228, 252, 266, 342, 399, 532, 684, 798, 1197, 1596, 2394, 4441, 4788, 8882, 13323, 17764, 26646, 31087, 39969, 53292, 62174, 79938, 84379, 93261, 124348, 159876, 168758, 186522, 253137, 279783, 337516, 373044, 506274, 559566, 590653, 759411, 1012548, 1119132, 1181306, 1518822, 1771959, 2362612, 3037644, 3543918, 5315877, 7087836, 10631754, 21263508]

約数ペア:

[(1, 21263508), (2, 10631754), (3, 7087836), (4, 5315877), (6, 3543918), (7, 3037644), (9, 2362612), (12, 1771959), (14, 1518822), (18, 1181306), (19, 1119132), (21, 1012548), (28, 759411), (36, 590653), (38, 559566), (42, 506274), (57, 373044), (63, 337516), (76, 279783), (84, 253137), (114, 186522), (126, 168758), (133, 159876), (171, 124348), (228, 93261), (252, 84379), (266, 79938), (342, 62174), (399, 53292), (532, 39969), (684, 31087), (798, 26646), (1197, 17764), (1596, 13323), (2394, 8882), (4441, 4788)]