72681520

素因数分解:

$2^4\times 5^1\times {\mathrm{41}}^1\times {\mathrm{22159}}^1$

素因数の和:22213

約数の個数: 40

約数和(自身を含む): 173113920

約数和(自身を除く): 100432400

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 41, 80, 82, 164, 205, 328, 410, 656, 820, 1640, 3280, 22159, 44318, 88636, 110795, 177272, 221590, 354544, 443180, 886360, 908519, 1772720, 1817038, 3634076, 4542595, 7268152, 9085190, 14536304, 18170380, 36340760, 72681520]

約数ペア:

[(1, 72681520), (2, 36340760), (4, 18170380), (5, 14536304), (8, 9085190), (10, 7268152), (16, 4542595), (20, 3634076), (40, 1817038), (41, 1772720), (80, 908519), (82, 886360), (164, 443180), (205, 354544), (328, 221590), (410, 177272), (656, 110795), (820, 88636), (1640, 44318), (3280, 22159)]