1820702990

素因数分解:

$2^1\times 5^1\times {\mathrm{41}}^1\times {\mathrm{43}}^1\times {\mathrm{61}}^1\times {\mathrm{1693}}^1$

素因数の和:1845

約数の個数: 64

約数和(自身を含む): 3493651392

約数和(自身を除く): 1672948402

約数列:

[1, 2, 5, 10, 41, 43, 61, 82, 86, 122, 205, 215, 305, 410, 430, 610, 1693, 1763, 2501, 2623, 3386, 3526, 5002, 5246, 8465, 8815, 12505, 13115, 16930, 17630, 25010, 26230, 69413, 72799, 103273, 107543, 138826, 145598, 206546, 215086, 347065, 363995, 516365, 537715, 694130, 727990, 1032730, 1075430, 2984759, 4234193, 4440739, 5969518, 8468386, 8881478, 14923795, 21170965, 22203695, 29847590, 42341930, 44407390, 182070299, 364140598, 910351495, 1820702990]

約数ペア:

[(1, 1820702990), (2, 910351495), (5, 364140598), (10, 182070299), (41, 44407390), (43, 42341930), (61, 29847590), (82, 22203695), (86, 21170965), (122, 14923795), (205, 8881478), (215, 8468386), (305, 5969518), (410, 4440739), (430, 4234193), (610, 2984759), (1693, 1075430), (1763, 1032730), (2501, 727990), (2623, 694130), (3386, 537715), (3526, 516365), (5002, 363995), (5246, 347065), (8465, 215086), (8815, 206546), (12505, 145598), (13115, 138826), (16930, 107543), (17630, 103273), (25010, 72799), (26230, 69413)]