81998540

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{173}}^1\times {\mathrm{1823}}^1$

素因数の和:2018

約数の個数: 48

約数和(自身を含む): 186617088

約数和(自身を除く): 104618548

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 173, 260, 346, 692, 865, 1730, 1823, 2249, 3460, 3646, 4498, 7292, 8996, 9115, 11245, 18230, 22490, 23699, 36460, 44980, 47398, 94796, 118495, 236990, 315379, 473980, 630758, 1261516, 1576895, 3153790, 4099927, 6307580, 8199854, 16399708, 20499635, 40999270, 81998540]

約数ペア:

[(1, 81998540), (2, 40999270), (4, 20499635), (5, 16399708), (10, 8199854), (13, 6307580), (20, 4099927), (26, 3153790), (52, 1576895), (65, 1261516), (130, 630758), (173, 473980), (260, 315379), (346, 236990), (692, 118495), (865, 94796), (1730, 47398), (1823, 44980), (2249, 36460), (3460, 23699), (3646, 22490), (4498, 18230), (7292, 11245), (8996, 9115)]