21052460

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{433}}^1$

素因数の和:483

約数の個数: 96

約数和(自身を含む): 55121472

約数和(自身を除く): 34069012

約数列:

[1, 2, 4, 5, 10, 11, 13, 17, 20, 22, 26, 34, 44, 52, 55, 65, 68, 85, 110, 130, 143, 170, 187, 220, 221, 260, 286, 340, 374, 433, 442, 572, 715, 748, 866, 884, 935, 1105, 1430, 1732, 1870, 2165, 2210, 2431, 2860, 3740, 4330, 4420, 4763, 4862, 5629, 7361, 8660, 9526, 9724, 11258, 12155, 14722, 19052, 22516, 23815, 24310, 28145, 29444, 36805, 47630, 48620, 56290, 61919, 73610, 80971, 95260, 95693, 112580, 123838, 147220, 161942, 191386, 247676, 309595, 323884, 382772, 404855, 478465, 619190, 809710, 956930, 1052623, 1238380, 1619420, 1913860, 2105246, 4210492, 5263115, 10526230, 21052460]

約数ペア:

[(1, 21052460), (2, 10526230), (4, 5263115), (5, 4210492), (10, 2105246), (11, 1913860), (13, 1619420), (17, 1238380), (20, 1052623), (22, 956930), (26, 809710), (34, 619190), (44, 478465), (52, 404855), (55, 382772), (65, 323884), (68, 309595), (85, 247676), (110, 191386), (130, 161942), (143, 147220), (170, 123838), (187, 112580), (220, 95693), (221, 95260), (260, 80971), (286, 73610), (340, 61919), (374, 56290), (433, 48620), (442, 47630), (572, 36805), (715, 29444), (748, 28145), (866, 24310), (884, 23815), (935, 22516), (1105, 19052), (1430, 14722), (1732, 12155), (1870, 11258), (2165, 9724), (2210, 9526), (2431, 8660), (2860, 7361), (3740, 5629), (4330, 4862), (4420, 4763)]