21284550

素因数分解:

$2^1\times 3^2\times 5^2\times 7^1\times {\mathrm{29}}^1\times {\mathrm{233}}^1$

素因数の和:287

約数の個数: 144

約数和(自身を含む): 67897440

約数和(自身を除く): 46612890

約数列:

[1, 2, 3, 5, 6, 7, 9, 10, 14, 15, 18, 21, 25, 29, 30, 35, 42, 45, 50, 58, 63, 70, 75, 87, 90, 105, 126, 145, 150, 174, 175, 203, 210, 225, 233, 261, 290, 315, 350, 406, 435, 450, 466, 522, 525, 609, 630, 699, 725, 870, 1015, 1050, 1165, 1218, 1305, 1398, 1450, 1575, 1631, 1827, 2030, 2097, 2175, 2330, 2610, 3045, 3150, 3262, 3495, 3654, 4194, 4350, 4893, 5075, 5825, 6090, 6525, 6757, 6990, 8155, 9135, 9786, 10150, 10485, 11650, 13050, 13514, 14679, 15225, 16310, 17475, 18270, 20271, 20970, 24465, 29358, 30450, 33785, 34950, 40542, 40775, 45675, 47299, 48930, 52425, 60813, 67570, 73395, 81550, 91350, 94598, 101355, 104850, 121626, 122325, 141897, 146790, 168925, 202710, 236495, 244650, 283794, 304065, 337850, 366975, 425691, 472990, 506775, 608130, 709485, 733950, 851382, 1013550, 1182475, 1418970, 1520325, 2128455, 2364950, 3040650, 3547425, 4256910, 7094850, 10642275, 21284550]

約数ペア:

[(1, 21284550), (2, 10642275), (3, 7094850), (5, 4256910), (6, 3547425), (7, 3040650), (9, 2364950), (10, 2128455), (14, 1520325), (15, 1418970), (18, 1182475), (21, 1013550), (25, 851382), (29, 733950), (30, 709485), (35, 608130), (42, 506775), (45, 472990), (50, 425691), (58, 366975), (63, 337850), (70, 304065), (75, 283794), (87, 244650), (90, 236495), (105, 202710), (126, 168925), (145, 146790), (150, 141897), (174, 122325), (175, 121626), (203, 104850), (210, 101355), (225, 94598), (233, 91350), (261, 81550), (290, 73395), (315, 67570), (350, 60813), (406, 52425), (435, 48930), (450, 47299), (466, 45675), (522, 40775), (525, 40542), (609, 34950), (630, 33785), (699, 30450), (725, 29358), (870, 24465), (1015, 20970), (1050, 20271), (1165, 18270), (1218, 17475), (1305, 16310), (1398, 15225), (1450, 14679), (1575, 13514), (1631, 13050), (1827, 11650), (2030, 10485), (2097, 10150), (2175, 9786), (2330, 9135), (2610, 8155), (3045, 6990), (3150, 6757), (3262, 6525), (3495, 6090), (3654, 5825), (4194, 5075), (4350, 4893)]