20523438

素因数分解:

$2^1\times 3^2\times {\mathrm{13}}^1\times {\mathrm{229}}^1\times {\mathrm{383}}^1$

素因数の和:633

約数の個数: 48

約数和(自身を含む): 48222720

約数和(自身を除く): 27699282

約数列:

[1, 2, 3, 6, 9, 13, 18, 26, 39, 78, 117, 229, 234, 383, 458, 687, 766, 1149, 1374, 2061, 2298, 2977, 3447, 4122, 4979, 5954, 6894, 8931, 9958, 14937, 17862, 26793, 29874, 44811, 53586, 87707, 89622, 175414, 263121, 526242, 789363, 1140191, 1578726, 2280382, 3420573, 6841146, 10261719, 20523438]

約数ペア:

[(1, 20523438), (2, 10261719), (3, 6841146), (6, 3420573), (9, 2280382), (13, 1578726), (18, 1140191), (26, 789363), (39, 526242), (78, 263121), (117, 175414), (229, 89622), (234, 87707), (383, 53586), (458, 44811), (687, 29874), (766, 26793), (1149, 17862), (1374, 14937), (2061, 9958), (2298, 8931), (2977, 6894), (3447, 5954), (4122, 4979)]