221991406

素因数分解:

$2^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{157}}^1\times {\mathrm{457}}^1$

素因数の和:653

約数の個数: 64

約数和(自身を含む): 437657472

約数和(自身を除く): 215666066

約数列:

[1, 2, 7, 13, 14, 17, 26, 34, 91, 119, 157, 182, 221, 238, 314, 442, 457, 914, 1099, 1547, 2041, 2198, 2669, 3094, 3199, 4082, 5338, 5941, 6398, 7769, 11882, 14287, 15538, 18683, 28574, 34697, 37366, 41587, 54383, 69394, 71749, 83174, 100997, 108766, 143498, 201994, 242879, 485758, 502243, 706979, 932737, 1004486, 1219733, 1413958, 1865474, 2439466, 6529159, 8538131, 13058318, 15856529, 17076262, 31713058, 110995703, 221991406]

約数ペア:

[(1, 221991406), (2, 110995703), (7, 31713058), (13, 17076262), (14, 15856529), (17, 13058318), (26, 8538131), (34, 6529159), (91, 2439466), (119, 1865474), (157, 1413958), (182, 1219733), (221, 1004486), (238, 932737), (314, 706979), (442, 502243), (457, 485758), (914, 242879), (1099, 201994), (1547, 143498), (2041, 108766), (2198, 100997), (2669, 83174), (3094, 71749), (3199, 69394), (4082, 54383), (5338, 41587), (5941, 37366), (6398, 34697), (7769, 28574), (11882, 18683), (14287, 15538)]