19973560

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{641}}^1$

素因数の和:712

約数の個数: 64

約数和(自身を含む): 48535200

約数和(自身を除く): 28561640

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 41, 76, 82, 95, 152, 164, 190, 205, 328, 380, 410, 641, 760, 779, 820, 1282, 1558, 1640, 2564, 3116, 3205, 3895, 5128, 6232, 6410, 7790, 12179, 12820, 15580, 24358, 25640, 26281, 31160, 48716, 52562, 60895, 97432, 105124, 121790, 131405, 210248, 243580, 262810, 487160, 499339, 525620, 998678, 1051240, 1997356, 2496695, 3994712, 4993390, 9986780, 19973560]

約数ペア:

[(1, 19973560), (2, 9986780), (4, 4993390), (5, 3994712), (8, 2496695), (10, 1997356), (19, 1051240), (20, 998678), (38, 525620), (40, 499339), (41, 487160), (76, 262810), (82, 243580), (95, 210248), (152, 131405), (164, 121790), (190, 105124), (205, 97432), (328, 60895), (380, 52562), (410, 48716), (641, 31160), (760, 26281), (779, 25640), (820, 24358), (1282, 15580), (1558, 12820), (1640, 12179), (2564, 7790), (3116, 6410), (3205, 6232), (3895, 5128)]