21263715

素因数分解:

$3^5\times 5^1\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{43}}^1$

素因数の和:111

約数の個数: 96

約数和(自身を含む): 43819776

約数和(自身を除く): 22556061

約数列:

[1, 3, 5, 9, 11, 15, 27, 33, 37, 43, 45, 55, 81, 99, 111, 129, 135, 165, 185, 215, 243, 297, 333, 387, 405, 407, 473, 495, 555, 645, 891, 999, 1161, 1215, 1221, 1419, 1485, 1591, 1665, 1935, 2035, 2365, 2673, 2997, 3483, 3663, 4257, 4455, 4773, 4995, 5805, 6105, 7095, 7955, 8991, 10449, 10989, 12771, 13365, 14319, 14985, 17415, 17501, 18315, 21285, 23865, 32967, 38313, 42957, 44955, 52245, 52503, 54945, 63855, 71595, 87505, 98901, 114939, 128871, 157509, 164835, 191565, 214785, 262515, 386613, 472527, 494505, 574695, 644355, 787545, 1417581, 1933065, 2362635, 4252743, 7087905, 21263715]

約数ペア:

[(1, 21263715), (3, 7087905), (5, 4252743), (9, 2362635), (11, 1933065), (15, 1417581), (27, 787545), (33, 644355), (37, 574695), (43, 494505), (45, 472527), (55, 386613), (81, 262515), (99, 214785), (111, 191565), (129, 164835), (135, 157509), (165, 128871), (185, 114939), (215, 98901), (243, 87505), (297, 71595), (333, 63855), (387, 54945), (405, 52503), (407, 52245), (473, 44955), (495, 42957), (555, 38313), (645, 32967), (891, 23865), (999, 21285), (1161, 18315), (1215, 17501), (1221, 17415), (1419, 14985), (1485, 14319), (1591, 13365), (1665, 12771), (1935, 10989), (2035, 10449), (2365, 8991), (2673, 7955), (2997, 7095), (3483, 6105), (3663, 5805), (4257, 4995), (4455, 4773)]