21515691529720

素因数分解:

$2^3\times 5^1\times {\mathrm{2179}}^1\times {\mathrm{2423}}^1\times {\mathrm{101879}}^1$

素因数の和:106492

約数の個数: 64

約数和(自身を含む): 48452986944000

約数和(自身を除く): 26937295414280

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 2179, 2423, 4358, 4846, 8716, 9692, 10895, 12115, 17432, 19384, 21790, 24230, 43580, 48460, 87160, 96920, 101879, 203758, 407516, 509395, 815032, 1018790, 2037580, 4075160, 5279717, 10559434, 21118868, 26398585, 42237736, 52797170, 105594340, 211188680, 221994341, 246852817, 443988682, 493705634, 887977364, 987411268, 1109971705, 1234264085, 1775954728, 1974822536, 2219943410, 2468528170, 4439886820, 4937056340, 8879773640, 9874112680, 537892288243, 1075784576486, 2151569152972, 2689461441215, 4303138305944, 5378922882430, 10757845764860, 21515691529720]

約数ペア:

[(1, 21515691529720), (2, 10757845764860), (4, 5378922882430), (5, 4303138305944), (8, 2689461441215), (10, 2151569152972), (20, 1075784576486), (40, 537892288243), (2179, 9874112680), (2423, 8879773640), (4358, 4937056340), (4846, 4439886820), (8716, 2468528170), (9692, 2219943410), (10895, 1974822536), (12115, 1775954728), (17432, 1234264085), (19384, 1109971705), (21790, 987411268), (24230, 887977364), (43580, 493705634), (48460, 443988682), (87160, 246852817), (96920, 221994341), (101879, 211188680), (203758, 105594340), (407516, 52797170), (509395, 42237736), (815032, 26398585), (1018790, 21118868), (2037580, 10559434), (4075160, 5279717)]