20078640

素因数分解:

$2^4\times 3^2\times 5^1\times {\mathrm{79}}^1\times {\mathrm{353}}^1$

素因数の和:451

約数の個数: 120

約数和(自身を含む): 68477760

約数和(自身を除く): 48399120

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 36, 40, 45, 48, 60, 72, 79, 80, 90, 120, 144, 158, 180, 237, 240, 316, 353, 360, 395, 474, 632, 706, 711, 720, 790, 948, 1059, 1185, 1264, 1412, 1422, 1580, 1765, 1896, 2118, 2370, 2824, 2844, 3160, 3177, 3530, 3555, 3792, 4236, 4740, 5295, 5648, 5688, 6320, 6354, 7060, 7110, 8472, 9480, 10590, 11376, 12708, 14120, 14220, 15885, 16944, 18960, 21180, 25416, 27887, 28240, 28440, 31770, 42360, 50832, 55774, 56880, 63540, 83661, 84720, 111548, 127080, 139435, 167322, 223096, 250983, 254160, 278870, 334644, 418305, 446192, 501966, 557740, 669288, 836610, 1003932, 1115480, 1254915, 1338576, 1673220, 2007864, 2230960, 2509830, 3346440, 4015728, 5019660, 6692880, 10039320, 20078640]

約数ペア:

[(1, 20078640), (2, 10039320), (3, 6692880), (4, 5019660), (5, 4015728), (6, 3346440), (8, 2509830), (9, 2230960), (10, 2007864), (12, 1673220), (15, 1338576), (16, 1254915), (18, 1115480), (20, 1003932), (24, 836610), (30, 669288), (36, 557740), (40, 501966), (45, 446192), (48, 418305), (60, 334644), (72, 278870), (79, 254160), (80, 250983), (90, 223096), (120, 167322), (144, 139435), (158, 127080), (180, 111548), (237, 84720), (240, 83661), (316, 63540), (353, 56880), (360, 55774), (395, 50832), (474, 42360), (632, 31770), (706, 28440), (711, 28240), (720, 27887), (790, 25416), (948, 21180), (1059, 18960), (1185, 16944), (1264, 15885), (1412, 14220), (1422, 14120), (1580, 12708), (1765, 11376), (1896, 10590), (2118, 9480), (2370, 8472), (2824, 7110), (2844, 7060), (3160, 6354), (3177, 6320), (3530, 5688), (3555, 5648), (3792, 5295), (4236, 4740)]