1780491280

素因数分解:

$2^4\times 5^1\times {\mathrm{89}}^1\times {\mathrm{113}}^1\times {\mathrm{2213}}^1$

素因数の和:2428

約数の個数: 80

約数和(自身を含む): 4225109040

約数和(自身を除く): 2444617760

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 89, 113, 178, 226, 356, 445, 452, 565, 712, 890, 904, 1130, 1424, 1780, 1808, 2213, 2260, 3560, 4426, 4520, 7120, 8852, 9040, 10057, 11065, 17704, 20114, 22130, 35408, 40228, 44260, 50285, 80456, 88520, 100570, 160912, 177040, 196957, 201140, 250069, 393914, 402280, 500138, 787828, 804560, 984785, 1000276, 1250345, 1575656, 1969570, 2000552, 2500690, 3151312, 3939140, 4001104, 5001380, 7878280, 10002760, 15756560, 20005520, 22256141, 44512282, 89024564, 111280705, 178049128, 222561410, 356098256, 445122820, 890245640, 1780491280]

約数ペア:

[(1, 1780491280), (2, 890245640), (4, 445122820), (5, 356098256), (8, 222561410), (10, 178049128), (16, 111280705), (20, 89024564), (40, 44512282), (80, 22256141), (89, 20005520), (113, 15756560), (178, 10002760), (226, 7878280), (356, 5001380), (445, 4001104), (452, 3939140), (565, 3151312), (712, 2500690), (890, 2000552), (904, 1969570), (1130, 1575656), (1424, 1250345), (1780, 1000276), (1808, 984785), (2213, 804560), (2260, 787828), (3560, 500138), (4426, 402280), (4520, 393914), (7120, 250069), (8852, 201140), (9040, 196957), (10057, 177040), (11065, 160912), (17704, 100570), (20114, 88520), (22130, 80456), (35408, 50285), (40228, 44260)]