21129290

素因数分解:

$2^1\times 5^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{107}}^1$

素因数の和:172

約数の個数: 96

約数和(自身を含む): 49641984

約数和(自身を除く): 28512694

約数列:

[1, 2, 5, 7, 10, 13, 14, 26, 31, 35, 49, 62, 65, 70, 91, 98, 107, 130, 155, 182, 214, 217, 245, 310, 403, 434, 455, 490, 535, 637, 749, 806, 910, 1070, 1085, 1274, 1391, 1498, 1519, 2015, 2170, 2782, 2821, 3038, 3185, 3317, 3745, 4030, 5243, 5642, 6370, 6634, 6955, 7490, 7595, 9737, 10486, 13910, 14105, 15190, 16585, 19474, 19747, 23219, 26215, 28210, 33170, 39494, 43121, 46438, 48685, 52430, 68159, 86242, 97370, 98735, 116095, 136318, 162533, 197470, 215605, 232190, 301847, 325066, 340795, 431210, 603694, 681590, 812665, 1509235, 1625330, 2112929, 3018470, 4225858, 10564645, 21129290]

約数ペア:

[(1, 21129290), (2, 10564645), (5, 4225858), (7, 3018470), (10, 2112929), (13, 1625330), (14, 1509235), (26, 812665), (31, 681590), (35, 603694), (49, 431210), (62, 340795), (65, 325066), (70, 301847), (91, 232190), (98, 215605), (107, 197470), (130, 162533), (155, 136318), (182, 116095), (214, 98735), (217, 97370), (245, 86242), (310, 68159), (403, 52430), (434, 48685), (455, 46438), (490, 43121), (535, 39494), (637, 33170), (749, 28210), (806, 26215), (910, 23219), (1070, 19747), (1085, 19474), (1274, 16585), (1391, 15190), (1498, 14105), (1519, 13910), (2015, 10486), (2170, 9737), (2782, 7595), (2821, 7490), (3038, 6955), (3185, 6634), (3317, 6370), (3745, 5642), (4030, 5243)]