445945520

素因数分解:

$2^4\times 5^1\times {\mathrm{41}}^1\times {\mathrm{79}}^1\times {\mathrm{1721}}^1$

素因数の和:1854

約数の個数: 80

約数和(自身を含む): 1076181120

約数和(自身を除く): 630235600

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 41, 79, 80, 82, 158, 164, 205, 316, 328, 395, 410, 632, 656, 790, 820, 1264, 1580, 1640, 1721, 3160, 3239, 3280, 3442, 6320, 6478, 6884, 8605, 12956, 13768, 16195, 17210, 25912, 27536, 32390, 34420, 51824, 64780, 68840, 70561, 129560, 135959, 137680, 141122, 259120, 271918, 282244, 352805, 543836, 564488, 679795, 705610, 1087672, 1128976, 1359590, 1411220, 2175344, 2719180, 2822440, 5438360, 5574319, 5644880, 10876720, 11148638, 22297276, 27871595, 44594552, 55743190, 89189104, 111486380, 222972760, 445945520]

約数ペア:

[(1, 445945520), (2, 222972760), (4, 111486380), (5, 89189104), (8, 55743190), (10, 44594552), (16, 27871595), (20, 22297276), (40, 11148638), (41, 10876720), (79, 5644880), (80, 5574319), (82, 5438360), (158, 2822440), (164, 2719180), (205, 2175344), (316, 1411220), (328, 1359590), (395, 1128976), (410, 1087672), (632, 705610), (656, 679795), (790, 564488), (820, 543836), (1264, 352805), (1580, 282244), (1640, 271918), (1721, 259120), (3160, 141122), (3239, 137680), (3280, 135959), (3442, 129560), (6320, 70561), (6478, 68840), (6884, 64780), (8605, 51824), (12956, 34420), (13768, 32390), (16195, 27536), (17210, 25912)]