21317040

素因数分解:

$2^4\times 3^3\times 5^1\times {\mathrm{71}}^1\times {\mathrm{139}}^1$

素因数の和:232

約数の個数: 160

約数和(自身を含む): 74995200

約数和(自身を除く): 53678160

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 27, 30, 36, 40, 45, 48, 54, 60, 71, 72, 80, 90, 108, 120, 135, 139, 142, 144, 180, 213, 216, 240, 270, 278, 284, 355, 360, 417, 426, 432, 540, 556, 568, 639, 695, 710, 720, 834, 852, 1065, 1080, 1112, 1136, 1251, 1278, 1390, 1420, 1668, 1704, 1917, 2085, 2130, 2160, 2224, 2502, 2556, 2780, 2840, 3195, 3336, 3408, 3753, 3834, 4170, 4260, 5004, 5112, 5560, 5680, 6255, 6390, 6672, 7506, 7668, 8340, 8520, 9585, 9869, 10008, 10224, 11120, 12510, 12780, 15012, 15336, 16680, 17040, 18765, 19170, 19738, 20016, 25020, 25560, 29607, 30024, 30672, 33360, 37530, 38340, 39476, 49345, 50040, 51120, 59214, 60048, 75060, 76680, 78952, 88821, 98690, 100080, 118428, 148035, 150120, 153360, 157904, 177642, 197380, 236856, 266463, 296070, 300240, 355284, 394760, 444105, 473712, 532926, 592140, 710568, 789520, 888210, 1065852, 1184280, 1332315, 1421136, 1776420, 2131704, 2368560, 2664630, 3552840, 4263408, 5329260, 7105680, 10658520, 21317040]

約数ペア:

[(1, 21317040), (2, 10658520), (3, 7105680), (4, 5329260), (5, 4263408), (6, 3552840), (8, 2664630), (9, 2368560), (10, 2131704), (12, 1776420), (15, 1421136), (16, 1332315), (18, 1184280), (20, 1065852), (24, 888210), (27, 789520), (30, 710568), (36, 592140), (40, 532926), (45, 473712), (48, 444105), (54, 394760), (60, 355284), (71, 300240), (72, 296070), (80, 266463), (90, 236856), (108, 197380), (120, 177642), (135, 157904), (139, 153360), (142, 150120), (144, 148035), (180, 118428), (213, 100080), (216, 98690), (240, 88821), (270, 78952), (278, 76680), (284, 75060), (355, 60048), (360, 59214), (417, 51120), (426, 50040), (432, 49345), (540, 39476), (556, 38340), (568, 37530), (639, 33360), (695, 30672), (710, 30024), (720, 29607), (834, 25560), (852, 25020), (1065, 20016), (1080, 19738), (1112, 19170), (1136, 18765), (1251, 17040), (1278, 16680), (1390, 15336), (1420, 15012), (1668, 12780), (1704, 12510), (1917, 11120), (2085, 10224), (2130, 10008), (2160, 9869), (2224, 9585), (2502, 8520), (2556, 8340), (2780, 7668), (2840, 7506), (3195, 6672), (3336, 6390), (3408, 6255), (3753, 5680), (3834, 5560), (4170, 5112), (4260, 5004)]