21251230

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{11}}^2\times {\mathrm{13}}^1\times {\mathrm{193}}^1$

素因数の和:242

約数の個数: 96

約数和(自身を含む): 52016832

約数和(自身を除く): 30765602

約数列:

[1, 2, 5, 7, 10, 11, 13, 14, 22, 26, 35, 55, 65, 70, 77, 91, 110, 121, 130, 143, 154, 182, 193, 242, 286, 385, 386, 455, 605, 715, 770, 847, 910, 965, 1001, 1210, 1351, 1430, 1573, 1694, 1930, 2002, 2123, 2509, 2702, 3146, 4235, 4246, 5005, 5018, 6755, 7865, 8470, 10010, 10615, 11011, 12545, 13510, 14861, 15730, 17563, 21230, 22022, 23353, 25090, 27599, 29722, 35126, 46706, 55055, 55198, 74305, 87815, 110110, 116765, 137995, 148610, 163471, 175630, 193193, 233530, 275990, 303589, 326942, 386386, 607178, 817355, 965965, 1517945, 1634710, 1931930, 2125123, 3035890, 4250246, 10625615, 21251230]

約数ペア:

[(1, 21251230), (2, 10625615), (5, 4250246), (7, 3035890), (10, 2125123), (11, 1931930), (13, 1634710), (14, 1517945), (22, 965965), (26, 817355), (35, 607178), (55, 386386), (65, 326942), (70, 303589), (77, 275990), (91, 233530), (110, 193193), (121, 175630), (130, 163471), (143, 148610), (154, 137995), (182, 116765), (193, 110110), (242, 87815), (286, 74305), (385, 55198), (386, 55055), (455, 46706), (605, 35126), (715, 29722), (770, 27599), (847, 25090), (910, 23353), (965, 22022), (1001, 21230), (1210, 17563), (1351, 15730), (1430, 14861), (1573, 13510), (1694, 12545), (1930, 11011), (2002, 10615), (2123, 10010), (2509, 8470), (2702, 7865), (3146, 6755), (4235, 5018), (4246, 5005)]