20885358

素因数分解:

$2^1\times 3^1\times {\mathrm{13}}^2\times {\mathrm{43}}^1\times {\mathrm{479}}^1$

素因数の和:553

約数の個数: 48

約数和(自身を含む): 46379520

約数和(自身を除く): 25494162

約数列:

[1, 2, 3, 6, 13, 26, 39, 43, 78, 86, 129, 169, 258, 338, 479, 507, 559, 958, 1014, 1118, 1437, 1677, 2874, 3354, 6227, 7267, 12454, 14534, 18681, 20597, 21801, 37362, 41194, 43602, 61791, 80951, 123582, 161902, 242853, 267761, 485706, 535522, 803283, 1606566, 3480893, 6961786, 10442679, 20885358]

約数ペア:

[(1, 20885358), (2, 10442679), (3, 6961786), (6, 3480893), (13, 1606566), (26, 803283), (39, 535522), (43, 485706), (78, 267761), (86, 242853), (129, 161902), (169, 123582), (258, 80951), (338, 61791), (479, 43602), (507, 41194), (559, 37362), (958, 21801), (1014, 20597), (1118, 18681), (1437, 14534), (1677, 12454), (2874, 7267), (3354, 6227)]