15997905

素因数分解:

$3^7\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1$

素因数の和:63

約数の個数: 128

約数和(自身を含む): 37785600

約数和(自身を除く): 21787695

約数列:

[1, 3, 5, 7, 9, 11, 15, 19, 21, 27, 33, 35, 45, 55, 57, 63, 77, 81, 95, 99, 105, 133, 135, 165, 171, 189, 209, 231, 243, 285, 297, 315, 385, 399, 405, 495, 513, 567, 627, 665, 693, 729, 855, 891, 945, 1045, 1155, 1197, 1215, 1463, 1485, 1539, 1701, 1881, 1995, 2079, 2187, 2565, 2673, 2835, 3135, 3465, 3591, 3645, 4389, 4455, 4617, 5103, 5643, 5985, 6237, 7315, 7695, 8019, 8505, 9405, 10395, 10773, 10935, 13167, 13365, 13851, 15309, 16929, 17955, 18711, 21945, 23085, 24057, 25515, 28215, 31185, 32319, 39501, 40095, 41553, 50787, 53865, 56133, 65835, 69255, 76545, 84645, 93555, 96957, 118503, 120285, 152361, 161595, 168399, 197505, 207765, 253935, 280665, 290871, 355509, 457083, 484785, 592515, 761805, 841995, 1066527, 1454355, 1777545, 2285415, 3199581, 5332635, 15997905]

約数ペア:

[(1, 15997905), (3, 5332635), (5, 3199581), (7, 2285415), (9, 1777545), (11, 1454355), (15, 1066527), (19, 841995), (21, 761805), (27, 592515), (33, 484785), (35, 457083), (45, 355509), (55, 290871), (57, 280665), (63, 253935), (77, 207765), (81, 197505), (95, 168399), (99, 161595), (105, 152361), (133, 120285), (135, 118503), (165, 96957), (171, 93555), (189, 84645), (209, 76545), (231, 69255), (243, 65835), (285, 56133), (297, 53865), (315, 50787), (385, 41553), (399, 40095), (405, 39501), (495, 32319), (513, 31185), (567, 28215), (627, 25515), (665, 24057), (693, 23085), (729, 21945), (855, 18711), (891, 17955), (945, 16929), (1045, 15309), (1155, 13851), (1197, 13365), (1215, 13167), (1463, 10935), (1485, 10773), (1539, 10395), (1701, 9405), (1881, 8505), (1995, 8019), (2079, 7695), (2187, 7315), (2565, 6237), (2673, 5985), (2835, 5643), (3135, 5103), (3465, 4617), (3591, 4455), (3645, 4389)]