21494120

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{73}}^1\times {\mathrm{433}}^1$

素因数の和:534

約数の個数: 64

約数和(自身を含む): 52027920

約数和(自身を除く): 30533800

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 68, 73, 85, 136, 146, 170, 292, 340, 365, 433, 584, 680, 730, 866, 1241, 1460, 1732, 2165, 2482, 2920, 3464, 4330, 4964, 6205, 7361, 8660, 9928, 12410, 14722, 17320, 24820, 29444, 31609, 36805, 49640, 58888, 63218, 73610, 126436, 147220, 158045, 252872, 294440, 316090, 537353, 632180, 1074706, 1264360, 2149412, 2686765, 4298824, 5373530, 10747060, 21494120]

約数ペア:

[(1, 21494120), (2, 10747060), (4, 5373530), (5, 4298824), (8, 2686765), (10, 2149412), (17, 1264360), (20, 1074706), (34, 632180), (40, 537353), (68, 316090), (73, 294440), (85, 252872), (136, 158045), (146, 147220), (170, 126436), (292, 73610), (340, 63218), (365, 58888), (433, 49640), (584, 36805), (680, 31609), (730, 29444), (866, 24820), (1241, 17320), (1460, 14722), (1732, 12410), (2165, 9928), (2482, 8660), (2920, 7361), (3464, 6205), (4330, 4964)]