28660555

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{151}}^1$

素因数の和:220

約数の個数: 64

約数和(自身を含む): 47278080

約数和(自身を除く): 18617525

約数列:

[1, 5, 7, 11, 17, 29, 35, 55, 77, 85, 119, 145, 151, 187, 203, 319, 385, 493, 595, 755, 935, 1015, 1057, 1309, 1595, 1661, 2233, 2465, 2567, 3451, 4379, 5285, 5423, 6545, 8305, 11165, 11627, 12835, 17255, 17969, 21895, 27115, 28237, 30653, 37961, 48169, 58135, 74443, 89845, 141185, 153265, 189805, 197659, 240845, 337183, 372215, 521101, 818873, 988295, 1685915, 2605505, 4094365, 5732111, 28660555]

約数ペア:

[(1, 28660555), (5, 5732111), (7, 4094365), (11, 2605505), (17, 1685915), (29, 988295), (35, 818873), (55, 521101), (77, 372215), (85, 337183), (119, 240845), (145, 197659), (151, 189805), (187, 153265), (203, 141185), (319, 89845), (385, 74443), (493, 58135), (595, 48169), (755, 37961), (935, 30653), (1015, 28237), (1057, 27115), (1309, 21895), (1595, 17969), (1661, 17255), (2233, 12835), (2465, 11627), (2567, 11165), (3451, 8305), (4379, 6545), (5285, 5423)]