81547270

素因数分解:

$2^1\times 5^1\times 7^2\times {\mathrm{163}}^1\times {\mathrm{1021}}^1$

素因数の和:1205

約数の個数: 48

約数和(自身を含む): 171965808

約数和(自身を除く): 90418538

約数列:

[1, 2, 5, 7, 10, 14, 35, 49, 70, 98, 163, 245, 326, 490, 815, 1021, 1141, 1630, 2042, 2282, 5105, 5705, 7147, 7987, 10210, 11410, 14294, 15974, 35735, 39935, 50029, 71470, 79870, 100058, 166423, 250145, 332846, 500290, 832115, 1164961, 1664230, 2329922, 5824805, 8154727, 11649610, 16309454, 40773635, 81547270]

約数ペア:

[(1, 81547270), (2, 40773635), (5, 16309454), (7, 11649610), (10, 8154727), (14, 5824805), (35, 2329922), (49, 1664230), (70, 1164961), (98, 832115), (163, 500290), (245, 332846), (326, 250145), (490, 166423), (815, 100058), (1021, 79870), (1141, 71470), (1630, 50029), (2042, 39935), (2282, 35735), (5105, 15974), (5705, 14294), (7147, 11410), (7987, 10210)]