261745960

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{79}}^1\times {\mathrm{11833}}^1$

素因数の和:11930

約数の個数: 64

約数和(自身を含む): 681638400

約数和(自身を除く): 419892440

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 79, 140, 158, 280, 316, 395, 553, 632, 790, 1106, 1580, 2212, 2765, 3160, 4424, 5530, 11060, 11833, 22120, 23666, 47332, 59165, 82831, 94664, 118330, 165662, 236660, 331324, 414155, 473320, 662648, 828310, 934807, 1656620, 1869614, 3313240, 3739228, 4674035, 6543649, 7478456, 9348070, 13087298, 18696140, 26174596, 32718245, 37392280, 52349192, 65436490, 130872980, 261745960]

約数ペア:

[(1, 261745960), (2, 130872980), (4, 65436490), (5, 52349192), (7, 37392280), (8, 32718245), (10, 26174596), (14, 18696140), (20, 13087298), (28, 9348070), (35, 7478456), (40, 6543649), (56, 4674035), (70, 3739228), (79, 3313240), (140, 1869614), (158, 1656620), (280, 934807), (316, 828310), (395, 662648), (553, 473320), (632, 414155), (790, 331324), (1106, 236660), (1580, 165662), (2212, 118330), (2765, 94664), (3160, 82831), (4424, 59165), (5530, 47332), (11060, 23666), (11833, 22120)]