21374595

素因数分解:

$3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{1489}}^1$

素因数の和:1540

約数の個数: 48

約数和(自身を含む): 41839200

約数和(自身を除く): 20464605

約数列:

[1, 3, 5, 9, 11, 15, 29, 33, 45, 55, 87, 99, 145, 165, 261, 319, 435, 495, 957, 1305, 1489, 1595, 2871, 4467, 4785, 7445, 13401, 14355, 16379, 22335, 43181, 49137, 67005, 81895, 129543, 147411, 215905, 245685, 388629, 474991, 647715, 737055, 1424973, 1943145, 2374955, 4274919, 7124865, 21374595]

約数ペア:

[(1, 21374595), (3, 7124865), (5, 4274919), (9, 2374955), (11, 1943145), (15, 1424973), (29, 737055), (33, 647715), (45, 474991), (55, 388629), (87, 245685), (99, 215905), (145, 147411), (165, 129543), (261, 81895), (319, 67005), (435, 49137), (495, 43181), (957, 22335), (1305, 16379), (1489, 14355), (1595, 13401), (2871, 7445), (4467, 4785)]