217529660

素因数分解:

$2^2\times 5^1\times {\mathrm{37}}^1\times {\mathrm{61}}^2\times {\mathrm{79}}^1$

素因数の和:247

約数の個数: 72

約数和(自身を含む): 483013440

約数和(自身を除く): 265483780

約数列:

[1, 2, 4, 5, 10, 20, 37, 61, 74, 79, 122, 148, 158, 185, 244, 305, 316, 370, 395, 610, 740, 790, 1220, 1580, 2257, 2923, 3721, 4514, 4819, 5846, 7442, 9028, 9638, 11285, 11692, 14615, 14884, 18605, 19276, 22570, 24095, 29230, 37210, 45140, 48190, 58460, 74420, 96380, 137677, 178303, 275354, 293959, 356606, 550708, 587918, 688385, 713212, 891515, 1175836, 1376770, 1469795, 1783030, 2753540, 2939590, 3566060, 5879180, 10876483, 21752966, 43505932, 54382415, 108764830, 217529660]

約数ペア:

[(1, 217529660), (2, 108764830), (4, 54382415), (5, 43505932), (10, 21752966), (20, 10876483), (37, 5879180), (61, 3566060), (74, 2939590), (79, 2753540), (122, 1783030), (148, 1469795), (158, 1376770), (185, 1175836), (244, 891515), (305, 713212), (316, 688385), (370, 587918), (395, 550708), (610, 356606), (740, 293959), (790, 275354), (1220, 178303), (1580, 137677), (2257, 96380), (2923, 74420), (3721, 58460), (4514, 48190), (4819, 45140), (5846, 37210), (7442, 29230), (9028, 24095), (9638, 22570), (11285, 19276), (11692, 18605), (14615, 14884)]