209419210

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{20921}}^1$

素因数の和:20959

約数の個数: 64

約数和(自身を含む): 506145024

約数和(自身を除く): 296725814

約数列:

[1, 2, 5, 7, 10, 11, 13, 14, 22, 26, 35, 55, 65, 70, 77, 91, 110, 130, 143, 154, 182, 286, 385, 455, 715, 770, 910, 1001, 1430, 2002, 5005, 10010, 20921, 41842, 104605, 146447, 209210, 230131, 271973, 292894, 460262, 543946, 732235, 1150655, 1359865, 1464470, 1610917, 1903811, 2301310, 2719730, 2991703, 3221834, 3807622, 5983406, 8054585, 9519055, 14958515, 16109170, 19038110, 20941921, 29917030, 41883842, 104709605, 209419210]

約数ペア:

[(1, 209419210), (2, 104709605), (5, 41883842), (7, 29917030), (10, 20941921), (11, 19038110), (13, 16109170), (14, 14958515), (22, 9519055), (26, 8054585), (35, 5983406), (55, 3807622), (65, 3221834), (70, 2991703), (77, 2719730), (91, 2301310), (110, 1903811), (130, 1610917), (143, 1464470), (154, 1359865), (182, 1150655), (286, 732235), (385, 543946), (455, 460262), (715, 292894), (770, 271973), (910, 230131), (1001, 209210), (1430, 146447), (2002, 104605), (5005, 41842), (10010, 20921)]