21997404

素因数分解:

$2^2\times 3^2\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{4273}}^1$

素因数の和:4307

約数の個数: 72

約数和(自身を含む): 65340912

約数和(自身を除く): 43343508

約数列:

[1, 2, 3, 4, 6, 9, 11, 12, 13, 18, 22, 26, 33, 36, 39, 44, 52, 66, 78, 99, 117, 132, 143, 156, 198, 234, 286, 396, 429, 468, 572, 858, 1287, 1716, 2574, 4273, 5148, 8546, 12819, 17092, 25638, 38457, 47003, 51276, 55549, 76914, 94006, 111098, 141009, 153828, 166647, 188012, 222196, 282018, 333294, 423027, 499941, 564036, 611039, 666588, 846054, 999882, 1222078, 1692108, 1833117, 1999764, 2444156, 3666234, 5499351, 7332468, 10998702, 21997404]

約数ペア:

[(1, 21997404), (2, 10998702), (3, 7332468), (4, 5499351), (6, 3666234), (9, 2444156), (11, 1999764), (12, 1833117), (13, 1692108), (18, 1222078), (22, 999882), (26, 846054), (33, 666588), (36, 611039), (39, 564036), (44, 499941), (52, 423027), (66, 333294), (78, 282018), (99, 222196), (117, 188012), (132, 166647), (143, 153828), (156, 141009), (198, 111098), (234, 94006), (286, 76914), (396, 55549), (429, 51276), (468, 47003), (572, 38457), (858, 25638), (1287, 17092), (1716, 12819), (2574, 8546), (4273, 5148)]