21782398

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{41}}^2$

素因数の和:145

約数の個数: 48

約数和(自身を含む): 39697920

約数和(自身を除く): 17915522

約数列:

[1, 2, 11, 19, 22, 31, 38, 41, 62, 82, 209, 341, 418, 451, 589, 682, 779, 902, 1178, 1271, 1558, 1681, 2542, 3362, 6479, 8569, 12958, 13981, 17138, 18491, 24149, 27962, 31939, 36982, 48298, 52111, 63878, 104222, 265639, 351329, 531278, 573221, 702658, 990109, 1146442, 1980218, 10891199, 21782398]

約数ペア:

[(1, 21782398), (2, 10891199), (11, 1980218), (19, 1146442), (22, 990109), (31, 702658), (38, 573221), (41, 531278), (62, 351329), (82, 265639), (209, 104222), (341, 63878), (418, 52111), (451, 48298), (589, 36982), (682, 31939), (779, 27962), (902, 24149), (1178, 18491), (1271, 17138), (1558, 13981), (1681, 12958), (2542, 8569), (3362, 6479)]