209733940

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{79}}^1\times {\mathrm{10211}}^1$

素因数の和:10312

約数の個数: 48

約数和(自身を含む): 480372480

約数和(自身を除く): 270638540

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 79, 130, 158, 260, 316, 395, 790, 1027, 1580, 2054, 4108, 5135, 10211, 10270, 20422, 20540, 40844, 51055, 102110, 132743, 204220, 265486, 530972, 663715, 806669, 1327430, 1613338, 2654860, 3226676, 4033345, 8066690, 10486697, 16133380, 20973394, 41946788, 52433485, 104866970, 209733940]

約数ペア:

[(1, 209733940), (2, 104866970), (4, 52433485), (5, 41946788), (10, 20973394), (13, 16133380), (20, 10486697), (26, 8066690), (52, 4033345), (65, 3226676), (79, 2654860), (130, 1613338), (158, 1327430), (260, 806669), (316, 663715), (395, 530972), (790, 265486), (1027, 204220), (1580, 132743), (2054, 102110), (4108, 51055), (5135, 40844), (10211, 20540), (10270, 20422)]