27802775

素因数分解:

$5^2\times 7^1\times {\mathrm{11}}^2\times {\mathrm{13}}^1\times {\mathrm{101}}^1$

素因数の和:153

約数の個数: 72

約数和(自身を含む): 47101152

約数和(自身を除く): 19298377

約数列:

[1, 5, 7, 11, 13, 25, 35, 55, 65, 77, 91, 101, 121, 143, 175, 275, 325, 385, 455, 505, 605, 707, 715, 847, 1001, 1111, 1313, 1573, 1925, 2275, 2525, 3025, 3535, 3575, 4235, 5005, 5555, 6565, 7777, 7865, 9191, 11011, 12221, 14443, 17675, 21175, 25025, 27775, 32825, 38885, 39325, 45955, 55055, 61105, 72215, 85547, 101101, 158873, 194425, 229775, 275275, 305525, 361075, 427735, 505505, 794365, 1112111, 2138675, 2527525, 3971825, 5560555, 27802775]

約数ペア:

[(1, 27802775), (5, 5560555), (7, 3971825), (11, 2527525), (13, 2138675), (25, 1112111), (35, 794365), (55, 505505), (65, 427735), (77, 361075), (91, 305525), (101, 275275), (121, 229775), (143, 194425), (175, 158873), (275, 101101), (325, 85547), (385, 72215), (455, 61105), (505, 55055), (605, 45955), (707, 39325), (715, 38885), (847, 32825), (1001, 27775), (1111, 25025), (1313, 21175), (1573, 17675), (1925, 14443), (2275, 12221), (2525, 11011), (3025, 9191), (3535, 7865), (3575, 7777), (4235, 6565), (5005, 5555)]