20951784

素因数分解:

$2^3\times 3^4\times 7^1\times {\mathrm{31}}^1\times {\mathrm{149}}^1$

素因数の和:205

約数の個数: 160

約数和(自身を含む): 69696000

約数和(自身を除く): 48744216

約数列:

[1, 2, 3, 4, 6, 7, 8, 9, 12, 14, 18, 21, 24, 27, 28, 31, 36, 42, 54, 56, 62, 63, 72, 81, 84, 93, 108, 124, 126, 149, 162, 168, 186, 189, 216, 217, 248, 252, 279, 298, 324, 372, 378, 434, 447, 504, 558, 567, 596, 648, 651, 744, 756, 837, 868, 894, 1043, 1116, 1134, 1192, 1302, 1341, 1512, 1674, 1736, 1788, 1953, 2086, 2232, 2268, 2511, 2604, 2682, 3129, 3348, 3576, 3906, 4023, 4172, 4536, 4619, 5022, 5208, 5364, 5859, 6258, 6696, 7812, 8046, 8344, 9238, 9387, 10044, 10728, 11718, 12069, 12516, 13857, 15624, 16092, 17577, 18476, 18774, 20088, 23436, 24138, 25032, 27714, 28161, 32184, 32333, 35154, 36952, 37548, 41571, 46872, 48276, 55428, 56322, 64666, 70308, 75096, 83142, 84483, 96552, 96999, 110856, 112644, 124713, 129332, 140616, 166284, 168966, 193998, 225288, 249426, 258664, 290997, 332568, 337932, 374139, 387996, 498852, 581994, 675864, 748278, 775992, 872991, 997704, 1163988, 1496556, 1745982, 2327976, 2618973, 2993112, 3491964, 5237946, 6983928, 10475892, 20951784]

約数ペア:

[(1, 20951784), (2, 10475892), (3, 6983928), (4, 5237946), (6, 3491964), (7, 2993112), (8, 2618973), (9, 2327976), (12, 1745982), (14, 1496556), (18, 1163988), (21, 997704), (24, 872991), (27, 775992), (28, 748278), (31, 675864), (36, 581994), (42, 498852), (54, 387996), (56, 374139), (62, 337932), (63, 332568), (72, 290997), (81, 258664), (84, 249426), (93, 225288), (108, 193998), (124, 168966), (126, 166284), (149, 140616), (162, 129332), (168, 124713), (186, 112644), (189, 110856), (216, 96999), (217, 96552), (248, 84483), (252, 83142), (279, 75096), (298, 70308), (324, 64666), (372, 56322), (378, 55428), (434, 48276), (447, 46872), (504, 41571), (558, 37548), (567, 36952), (596, 35154), (648, 32333), (651, 32184), (744, 28161), (756, 27714), (837, 25032), (868, 24138), (894, 23436), (1043, 20088), (1116, 18774), (1134, 18476), (1192, 17577), (1302, 16092), (1341, 15624), (1512, 13857), (1674, 12516), (1736, 12069), (1788, 11718), (1953, 10728), (2086, 10044), (2232, 9387), (2268, 9238), (2511, 8344), (2604, 8046), (2682, 7812), (3129, 6696), (3348, 6258), (3576, 5859), (3906, 5364), (4023, 5208), (4172, 5022), (4536, 4619)]