205126420

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^2\times {\mathrm{23}}^1\times {\mathrm{1543}}^1$

素因数の和:1609

約数の個数: 72

約数和(自身を含む): 477800064

約数和(自身を除く): 272673644

約数列:

[1, 2, 4, 5, 10, 17, 20, 23, 34, 46, 68, 85, 92, 115, 170, 230, 289, 340, 391, 460, 578, 782, 1156, 1445, 1543, 1564, 1955, 2890, 3086, 3910, 5780, 6172, 6647, 7715, 7820, 13294, 15430, 26231, 26588, 30860, 33235, 35489, 52462, 66470, 70978, 104924, 131155, 132940, 141956, 177445, 262310, 354890, 445927, 524620, 603313, 709780, 891854, 1206626, 1783708, 2229635, 2413252, 3016565, 4459270, 6033130, 8918540, 10256321, 12066260, 20512642, 41025284, 51281605, 102563210, 205126420]

約数ペア:

[(1, 205126420), (2, 102563210), (4, 51281605), (5, 41025284), (10, 20512642), (17, 12066260), (20, 10256321), (23, 8918540), (34, 6033130), (46, 4459270), (68, 3016565), (85, 2413252), (92, 2229635), (115, 1783708), (170, 1206626), (230, 891854), (289, 709780), (340, 603313), (391, 524620), (460, 445927), (578, 354890), (782, 262310), (1156, 177445), (1445, 141956), (1543, 132940), (1564, 131155), (1955, 104924), (2890, 70978), (3086, 66470), (3910, 52462), (5780, 35489), (6172, 33235), (6647, 30860), (7715, 26588), (7820, 26231), (13294, 15430)]