820820

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{41}}^1$

素因数の和:81

約数の個数: 96

約数和(自身を含む): 2370816

約数和(自身を除く): 1549996

約数列:

[1, 2, 4, 5, 7, 10, 11, 13, 14, 20, 22, 26, 28, 35, 41, 44, 52, 55, 65, 70, 77, 82, 91, 110, 130, 140, 143, 154, 164, 182, 205, 220, 260, 286, 287, 308, 364, 385, 410, 451, 455, 533, 572, 574, 715, 770, 820, 902, 910, 1001, 1066, 1148, 1430, 1435, 1540, 1804, 1820, 2002, 2132, 2255, 2665, 2860, 2870, 3157, 3731, 4004, 4510, 5005, 5330, 5740, 5863, 6314, 7462, 9020, 10010, 10660, 11726, 12628, 14924, 15785, 18655, 20020, 23452, 29315, 31570, 37310, 41041, 58630, 63140, 74620, 82082, 117260, 164164, 205205, 410410, 820820]

約数ペア:

[(1, 820820), (2, 410410), (4, 205205), (5, 164164), (7, 117260), (10, 82082), (11, 74620), (13, 63140), (14, 58630), (20, 41041), (22, 37310), (26, 31570), (28, 29315), (35, 23452), (41, 20020), (44, 18655), (52, 15785), (55, 14924), (65, 12628), (70, 11726), (77, 10660), (82, 10010), (91, 9020), (110, 7462), (130, 6314), (140, 5863), (143, 5740), (154, 5330), (164, 5005), (182, 4510), (205, 4004), (220, 3731), (260, 3157), (286, 2870), (287, 2860), (308, 2665), (364, 2255), (385, 2132), (410, 2002), (451, 1820), (455, 1804), (533, 1540), (572, 1435), (574, 1430), (715, 1148), (770, 1066), (820, 1001), (902, 910)]