21293685

素因数分解:

$3^4\times 5^1\times 7^2\times {\mathrm{29}}^1\times {\mathrm{37}}^1$

素因数の和:97

約数の個数: 120

約数和(自身を含む): 47175480

約数和(自身を除く): 25881795

約数列:

[1, 3, 5, 7, 9, 15, 21, 27, 29, 35, 37, 45, 49, 63, 81, 87, 105, 111, 135, 145, 147, 185, 189, 203, 245, 259, 261, 315, 333, 405, 435, 441, 555, 567, 609, 735, 777, 783, 945, 999, 1015, 1073, 1295, 1305, 1323, 1421, 1665, 1813, 1827, 2205, 2331, 2349, 2835, 2997, 3045, 3219, 3885, 3915, 3969, 4263, 4995, 5365, 5439, 5481, 6615, 6993, 7105, 7511, 9065, 9135, 9657, 11655, 11745, 12789, 14985, 16095, 16317, 16443, 19845, 20979, 21315, 22533, 27195, 27405, 28971, 34965, 37555, 38367, 48285, 48951, 52577, 63945, 67599, 81585, 82215, 86913, 104895, 112665, 115101, 144855, 146853, 157731, 191835, 202797, 244755, 262885, 337995, 434565, 473193, 575505, 608391, 734265, 788655, 1013985, 1419579, 2365965, 3041955, 4258737, 7097895, 21293685]

約数ペア:

[(1, 21293685), (3, 7097895), (5, 4258737), (7, 3041955), (9, 2365965), (15, 1419579), (21, 1013985), (27, 788655), (29, 734265), (35, 608391), (37, 575505), (45, 473193), (49, 434565), (63, 337995), (81, 262885), (87, 244755), (105, 202797), (111, 191835), (135, 157731), (145, 146853), (147, 144855), (185, 115101), (189, 112665), (203, 104895), (245, 86913), (259, 82215), (261, 81585), (315, 67599), (333, 63945), (405, 52577), (435, 48951), (441, 48285), (555, 38367), (567, 37555), (609, 34965), (735, 28971), (777, 27405), (783, 27195), (945, 22533), (999, 21315), (1015, 20979), (1073, 19845), (1295, 16443), (1305, 16317), (1323, 16095), (1421, 14985), (1665, 12789), (1813, 11745), (1827, 11655), (2205, 9657), (2331, 9135), (2349, 9065), (2835, 7511), (2997, 7105), (3045, 6993), (3219, 6615), (3885, 5481), (3915, 5439), (3969, 5365), (4263, 4995)]