31931380

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{191}}^1\times {\mathrm{643}}^1$

素因数の和:856

約数の個数: 48

約数和(自身を含む): 72705024

約数和(自身を除く): 40773644

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 191, 260, 382, 643, 764, 955, 1286, 1910, 2483, 2572, 3215, 3820, 4966, 6430, 8359, 9932, 12415, 12860, 16718, 24830, 33436, 41795, 49660, 83590, 122813, 167180, 245626, 491252, 614065, 1228130, 1596569, 2456260, 3193138, 6386276, 7982845, 15965690, 31931380]

約数ペア:

[(1, 31931380), (2, 15965690), (4, 7982845), (5, 6386276), (10, 3193138), (13, 2456260), (20, 1596569), (26, 1228130), (52, 614065), (65, 491252), (130, 245626), (191, 167180), (260, 122813), (382, 83590), (643, 49660), (764, 41795), (955, 33436), (1286, 24830), (1910, 16718), (2483, 12860), (2572, 12415), (3215, 9932), (3820, 8359), (4966, 6430)]