20451015

素因数分解:

$3^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{271}}^1$

素因数の和:341

約数の個数: 64

約数和(自身を含む): 40212480

約数和(自身を除く): 19761465

約数列:

[1, 3, 5, 9, 13, 15, 27, 39, 43, 45, 65, 117, 129, 135, 195, 215, 271, 351, 387, 559, 585, 645, 813, 1161, 1355, 1677, 1755, 1935, 2439, 2795, 3523, 4065, 5031, 5805, 7317, 8385, 10569, 11653, 12195, 15093, 17615, 25155, 31707, 34959, 36585, 52845, 58265, 75465, 95121, 104877, 151489, 158535, 174795, 314631, 454467, 475605, 524385, 757445, 1363401, 1573155, 2272335, 4090203, 6817005, 20451015]

約数ペア:

[(1, 20451015), (3, 6817005), (5, 4090203), (9, 2272335), (13, 1573155), (15, 1363401), (27, 757445), (39, 524385), (43, 475605), (45, 454467), (65, 314631), (117, 174795), (129, 158535), (135, 151489), (195, 104877), (215, 95121), (271, 75465), (351, 58265), (387, 52845), (559, 36585), (585, 34959), (645, 31707), (813, 25155), (1161, 17615), (1355, 15093), (1677, 12195), (1755, 11653), (1935, 10569), (2439, 8385), (2795, 7317), (3523, 5805), (4065, 5031)]