18740860

素因数分解:

$2^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{131}}^1\times {\mathrm{311}}^1$

素因数の和:474

約数の個数: 48

約数和(自身を含む): 41513472

約数和(自身を除く): 22772612

約数列:

[1, 2, 4, 5, 10, 20, 23, 46, 92, 115, 131, 230, 262, 311, 460, 524, 622, 655, 1244, 1310, 1555, 2620, 3013, 3110, 6026, 6220, 7153, 12052, 14306, 15065, 28612, 30130, 35765, 40741, 60260, 71530, 81482, 143060, 162964, 203705, 407410, 814820, 937043, 1874086, 3748172, 4685215, 9370430, 18740860]

約数ペア:

[(1, 18740860), (2, 9370430), (4, 4685215), (5, 3748172), (10, 1874086), (20, 937043), (23, 814820), (46, 407410), (92, 203705), (115, 162964), (131, 143060), (230, 81482), (262, 71530), (311, 60260), (460, 40741), (524, 35765), (622, 30130), (655, 28612), (1244, 15065), (1310, 14306), (1555, 12052), (2620, 7153), (3013, 6220), (3110, 6026)]