81810808

素因数分解:

$2^3\times {\mathrm{19}}^1\times {\mathrm{73}}^2\times {\mathrm{101}}^1$

素因数の和:272

約数の個数: 48

約数和(自身を含む): 165331800

約数和(自身を除く): 83520992

約数列:

[1, 2, 4, 8, 19, 38, 73, 76, 101, 146, 152, 202, 292, 404, 584, 808, 1387, 1919, 2774, 3838, 5329, 5548, 7373, 7676, 10658, 11096, 14746, 15352, 21316, 29492, 42632, 58984, 101251, 140087, 202502, 280174, 405004, 538229, 560348, 810008, 1076458, 1120696, 2152916, 4305832, 10226351, 20452702, 40905404, 81810808]

約数ペア:

[(1, 81810808), (2, 40905404), (4, 20452702), (8, 10226351), (19, 4305832), (38, 2152916), (73, 1120696), (76, 1076458), (101, 810008), (146, 560348), (152, 538229), (202, 405004), (292, 280174), (404, 202502), (584, 140087), (808, 101251), (1387, 58984), (1919, 42632), (2774, 29492), (3838, 21316), (5329, 15352), (5548, 14746), (7373, 11096), (7676, 10658)]