291159640

素因数分解:

$2^3\times 5^1\times {\mathrm{71}}^1\times {\mathrm{157}}^1\times {\mathrm{653}}^1$

素因数の和:892

約数の個数: 64

約数和(自身を含む): 669591360

約数和(自身を除く): 378431720

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 71, 142, 157, 284, 314, 355, 568, 628, 653, 710, 785, 1256, 1306, 1420, 1570, 2612, 2840, 3140, 3265, 5224, 6280, 6530, 11147, 13060, 22294, 26120, 44588, 46363, 55735, 89176, 92726, 102521, 111470, 185452, 205042, 222940, 231815, 370904, 410084, 445880, 463630, 512605, 820168, 927260, 1025210, 1854520, 2050420, 4100840, 7278991, 14557982, 29115964, 36394955, 58231928, 72789910, 145579820, 291159640]

約数ペア:

[(1, 291159640), (2, 145579820), (4, 72789910), (5, 58231928), (8, 36394955), (10, 29115964), (20, 14557982), (40, 7278991), (71, 4100840), (142, 2050420), (157, 1854520), (284, 1025210), (314, 927260), (355, 820168), (568, 512605), (628, 463630), (653, 445880), (710, 410084), (785, 370904), (1256, 231815), (1306, 222940), (1420, 205042), (1570, 185452), (2612, 111470), (2840, 102521), (3140, 92726), (3265, 89176), (5224, 55735), (6280, 46363), (6530, 44588), (11147, 26120), (13060, 22294)]