21055554

素因数分解:

$2^1\times 3^2\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{67}}^1\times {\mathrm{79}}^1$

素因数の和:184

約数の個数: 96

約数和(自身を含む): 53464320

約数和(自身を除く): 32408766

約数列:

[1, 2, 3, 6, 9, 13, 17, 18, 26, 34, 39, 51, 67, 78, 79, 102, 117, 134, 153, 158, 201, 221, 234, 237, 306, 402, 442, 474, 603, 663, 711, 871, 1027, 1139, 1206, 1326, 1343, 1422, 1742, 1989, 2054, 2278, 2613, 2686, 3081, 3417, 3978, 4029, 5226, 5293, 6162, 6834, 7839, 8058, 9243, 10251, 10586, 12087, 14807, 15678, 15879, 17459, 18486, 20502, 24174, 29614, 31758, 34918, 44421, 47637, 52377, 68809, 88842, 89981, 95274, 104754, 133263, 137618, 157131, 179962, 206427, 266526, 269943, 314262, 412854, 539886, 619281, 809829, 1169753, 1238562, 1619658, 2339506, 3509259, 7018518, 10527777, 21055554]

約数ペア:

[(1, 21055554), (2, 10527777), (3, 7018518), (6, 3509259), (9, 2339506), (13, 1619658), (17, 1238562), (18, 1169753), (26, 809829), (34, 619281), (39, 539886), (51, 412854), (67, 314262), (78, 269943), (79, 266526), (102, 206427), (117, 179962), (134, 157131), (153, 137618), (158, 133263), (201, 104754), (221, 95274), (234, 89981), (237, 88842), (306, 68809), (402, 52377), (442, 47637), (474, 44421), (603, 34918), (663, 31758), (711, 29614), (871, 24174), (1027, 20502), (1139, 18486), (1206, 17459), (1326, 15879), (1343, 15678), (1422, 14807), (1742, 12087), (1989, 10586), (2054, 10251), (2278, 9243), (2613, 8058), (2686, 7839), (3081, 6834), (3417, 6162), (3978, 5293), (4029, 5226)]