21530544

素因数分解:

$2^4\times 3^1\times 7^1\times {\mathrm{139}}^1\times {\mathrm{461}}^1$

素因数の和:618

約数の個数: 80

約数和(自身を含む): 64162560

約数和(自身を除く): 42632016

約数列:

[1, 2, 3, 4, 6, 7, 8, 12, 14, 16, 21, 24, 28, 42, 48, 56, 84, 112, 139, 168, 278, 336, 417, 461, 556, 834, 922, 973, 1112, 1383, 1668, 1844, 1946, 2224, 2766, 2919, 3227, 3336, 3688, 3892, 5532, 5838, 6454, 6672, 7376, 7784, 9681, 11064, 11676, 12908, 15568, 19362, 22128, 23352, 25816, 38724, 46704, 51632, 64079, 77448, 128158, 154896, 192237, 256316, 384474, 448553, 512632, 768948, 897106, 1025264, 1345659, 1537896, 1794212, 2691318, 3075792, 3588424, 5382636, 7176848, 10765272, 21530544]

約数ペア:

[(1, 21530544), (2, 10765272), (3, 7176848), (4, 5382636), (6, 3588424), (7, 3075792), (8, 2691318), (12, 1794212), (14, 1537896), (16, 1345659), (21, 1025264), (24, 897106), (28, 768948), (42, 512632), (48, 448553), (56, 384474), (84, 256316), (112, 192237), (139, 154896), (168, 128158), (278, 77448), (336, 64079), (417, 51632), (461, 46704), (556, 38724), (834, 25816), (922, 23352), (973, 22128), (1112, 19362), (1383, 15568), (1668, 12908), (1844, 11676), (1946, 11064), (2224, 9681), (2766, 7784), (2919, 7376), (3227, 6672), (3336, 6454), (3688, 5838), (3892, 5532)]