21177135

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{37}}^1\times {\mathrm{79}}^1$

素因数の和:157

約数の個数: 96

約数和(自身を含む): 45527040

約数和(自身を除く): 24349905

約数列:

[1, 3, 5, 7, 9, 15, 21, 23, 35, 37, 45, 63, 69, 79, 105, 111, 115, 161, 185, 207, 237, 259, 315, 333, 345, 395, 483, 553, 555, 711, 777, 805, 851, 1035, 1185, 1295, 1449, 1659, 1665, 1817, 2331, 2415, 2553, 2765, 2923, 3555, 3885, 4255, 4977, 5451, 5957, 7245, 7659, 8295, 8769, 9085, 11655, 12719, 12765, 14615, 16353, 17871, 20461, 24885, 26307, 27255, 29785, 38157, 38295, 43845, 53613, 61383, 63595, 67229, 81765, 89355, 102305, 114471, 131535, 184149, 190785, 201687, 268065, 306915, 336145, 470603, 572355, 605061, 920745, 1008435, 1411809, 2353015, 3025305, 4235427, 7059045, 21177135]

約数ペア:

[(1, 21177135), (3, 7059045), (5, 4235427), (7, 3025305), (9, 2353015), (15, 1411809), (21, 1008435), (23, 920745), (35, 605061), (37, 572355), (45, 470603), (63, 336145), (69, 306915), (79, 268065), (105, 201687), (111, 190785), (115, 184149), (161, 131535), (185, 114471), (207, 102305), (237, 89355), (259, 81765), (315, 67229), (333, 63595), (345, 61383), (395, 53613), (483, 43845), (553, 38295), (555, 38157), (711, 29785), (777, 27255), (805, 26307), (851, 24885), (1035, 20461), (1185, 17871), (1295, 16353), (1449, 14615), (1659, 12765), (1665, 12719), (1817, 11655), (2331, 9085), (2415, 8769), (2553, 8295), (2765, 7659), (2923, 7245), (3555, 5957), (3885, 5451), (4255, 4977)]