21531209160

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{127}}^1\times {\mathrm{631}}^1\times {\mathrm{2239}}^1$

素因数の和:3011

約数の個数: 128

約数和(自身を含む): 65234534400

約数和(自身を除く): 43703325240

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 120, 127, 254, 381, 508, 631, 635, 762, 1016, 1262, 1270, 1524, 1893, 1905, 2239, 2524, 2540, 3048, 3155, 3786, 3810, 4478, 5048, 5080, 6310, 6717, 7572, 7620, 8956, 9465, 11195, 12620, 13434, 15144, 15240, 17912, 18930, 22390, 25240, 26868, 33585, 37860, 44780, 53736, 67170, 75720, 80137, 89560, 134340, 160274, 240411, 268680, 284353, 320548, 400685, 480822, 568706, 641096, 801370, 853059, 961644, 1137412, 1202055, 1412809, 1421765, 1602740, 1706118, 1923288, 2274824, 2404110, 2825618, 2843530, 3205480, 3412236, 4238427, 4265295, 4808220, 5651236, 5687060, 6824472, 7064045, 8476854, 8530590, 9616440, 11302472, 11374120, 14128090, 16953708, 17061180, 21192135, 28256180, 33907416, 34122360, 42384270, 56512360, 84768540, 169537080, 179426743, 358853486, 538280229, 717706972, 897133715, 1076560458, 1435413944, 1794267430, 2153120916, 2691401145, 3588534860, 4306241832, 5382802290, 7177069720, 10765604580, 21531209160]

約数ペア:

[(1, 21531209160), (2, 10765604580), (3, 7177069720), (4, 5382802290), (5, 4306241832), (6, 3588534860), (8, 2691401145), (10, 2153120916), (12, 1794267430), (15, 1435413944), (20, 1076560458), (24, 897133715), (30, 717706972), (40, 538280229), (60, 358853486), (120, 179426743), (127, 169537080), (254, 84768540), (381, 56512360), (508, 42384270), (631, 34122360), (635, 33907416), (762, 28256180), (1016, 21192135), (1262, 17061180), (1270, 16953708), (1524, 14128090), (1893, 11374120), (1905, 11302472), (2239, 9616440), (2524, 8530590), (2540, 8476854), (3048, 7064045), (3155, 6824472), (3786, 5687060), (3810, 5651236), (4478, 4808220), (5048, 4265295), (5080, 4238427), (6310, 3412236), (6717, 3205480), (7572, 2843530), (7620, 2825618), (8956, 2404110), (9465, 2274824), (11195, 1923288), (12620, 1706118), (13434, 1602740), (15144, 1421765), (15240, 1412809), (17912, 1202055), (18930, 1137412), (22390, 961644), (25240, 853059), (26868, 801370), (33585, 641096), (37860, 568706), (44780, 480822), (53736, 400685), (67170, 320548), (75720, 284353), (80137, 268680), (89560, 240411), (134340, 160274)]