220845620

素因数分解:

$2^2\times 5^1\times {\mathrm{61}}^1\times {\mathrm{157}}^1\times {\mathrm{1153}}^1$

素因数の和:1380

約数の個数: 48

約数和(自身を含む): 474792528

約数和(自身を除く): 253946908

約数列:

[1, 2, 4, 5, 10, 20, 61, 122, 157, 244, 305, 314, 610, 628, 785, 1153, 1220, 1570, 2306, 3140, 4612, 5765, 9577, 11530, 19154, 23060, 38308, 47885, 70333, 95770, 140666, 181021, 191540, 281332, 351665, 362042, 703330, 724084, 905105, 1406660, 1810210, 3620420, 11042281, 22084562, 44169124, 55211405, 110422810, 220845620]

約数ペア:

[(1, 220845620), (2, 110422810), (4, 55211405), (5, 44169124), (10, 22084562), (20, 11042281), (61, 3620420), (122, 1810210), (157, 1406660), (244, 905105), (305, 724084), (314, 703330), (610, 362042), (628, 351665), (785, 281332), (1153, 191540), (1220, 181021), (1570, 140666), (2306, 95770), (3140, 70333), (4612, 47885), (5765, 38308), (9577, 23060), (11530, 19154)]