21565908

素因数分解:

$2^2\times 3^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{227}}^1$

素因数の和:286

約数の個数: 144

約数和(自身を含む): 69713280

約数和(自身を除く): 48147372

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 13, 14, 18, 21, 26, 28, 29, 36, 39, 42, 52, 58, 63, 78, 84, 87, 91, 116, 117, 126, 156, 174, 182, 203, 227, 234, 252, 261, 273, 348, 364, 377, 406, 454, 468, 522, 546, 609, 681, 754, 812, 819, 908, 1044, 1092, 1131, 1218, 1362, 1508, 1589, 1638, 1827, 2043, 2262, 2436, 2639, 2724, 2951, 3178, 3276, 3393, 3654, 4086, 4524, 4767, 5278, 5902, 6356, 6583, 6786, 7308, 7917, 8172, 8853, 9534, 10556, 11804, 13166, 13572, 14301, 15834, 17706, 19068, 19749, 20657, 23751, 26332, 26559, 28602, 31668, 35412, 39498, 41314, 46081, 47502, 53118, 57204, 59247, 61971, 78996, 82628, 85579, 92162, 95004, 106236, 118494, 123942, 138243, 171158, 184324, 185913, 236988, 247884, 256737, 276486, 342316, 371826, 414729, 513474, 552972, 599053, 743652, 770211, 829458, 1026948, 1198106, 1540422, 1658916, 1797159, 2396212, 3080844, 3594318, 5391477, 7188636, 10782954, 21565908]

約数ペア:

[(1, 21565908), (2, 10782954), (3, 7188636), (4, 5391477), (6, 3594318), (7, 3080844), (9, 2396212), (12, 1797159), (13, 1658916), (14, 1540422), (18, 1198106), (21, 1026948), (26, 829458), (28, 770211), (29, 743652), (36, 599053), (39, 552972), (42, 513474), (52, 414729), (58, 371826), (63, 342316), (78, 276486), (84, 256737), (87, 247884), (91, 236988), (116, 185913), (117, 184324), (126, 171158), (156, 138243), (174, 123942), (182, 118494), (203, 106236), (227, 95004), (234, 92162), (252, 85579), (261, 82628), (273, 78996), (348, 61971), (364, 59247), (377, 57204), (406, 53118), (454, 47502), (468, 46081), (522, 41314), (546, 39498), (609, 35412), (681, 31668), (754, 28602), (812, 26559), (819, 26332), (908, 23751), (1044, 20657), (1092, 19749), (1131, 19068), (1218, 17706), (1362, 15834), (1508, 14301), (1589, 13572), (1638, 13166), (1827, 11804), (2043, 10556), (2262, 9534), (2436, 8853), (2639, 8172), (2724, 7917), (2951, 7308), (3178, 6786), (3276, 6583), (3393, 6356), (3654, 5902), (4086, 5278), (4524, 4767)]