21811140

素因数分解:

$2^2\times 3^3\times 5^1\times {\mathrm{13}}^2\times {\mathrm{239}}^1$

素因数の和:283

約数の個数: 144

約数和(自身を含む): 73785600

約数和(自身を除く): 51974460

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 13, 15, 18, 20, 26, 27, 30, 36, 39, 45, 52, 54, 60, 65, 78, 90, 108, 117, 130, 135, 156, 169, 180, 195, 234, 239, 260, 270, 338, 351, 390, 468, 478, 507, 540, 585, 676, 702, 717, 780, 845, 956, 1014, 1170, 1195, 1404, 1434, 1521, 1690, 1755, 2028, 2151, 2340, 2390, 2535, 2868, 3042, 3107, 3380, 3510, 3585, 4302, 4563, 4780, 5070, 6084, 6214, 6453, 7020, 7170, 7605, 8604, 9126, 9321, 10140, 10755, 12428, 12906, 14340, 15210, 15535, 18252, 18642, 21510, 22815, 25812, 27963, 30420, 31070, 32265, 37284, 40391, 43020, 45630, 46605, 55926, 62140, 64530, 80782, 83889, 91260, 93210, 111852, 121173, 129060, 139815, 161564, 167778, 186420, 201955, 242346, 279630, 335556, 363519, 403910, 419445, 484692, 559260, 605865, 727038, 807820, 838890, 1090557, 1211730, 1454076, 1677780, 1817595, 2181114, 2423460, 3635190, 4362228, 5452785, 7270380, 10905570, 21811140]

約数ペア:

[(1, 21811140), (2, 10905570), (3, 7270380), (4, 5452785), (5, 4362228), (6, 3635190), (9, 2423460), (10, 2181114), (12, 1817595), (13, 1677780), (15, 1454076), (18, 1211730), (20, 1090557), (26, 838890), (27, 807820), (30, 727038), (36, 605865), (39, 559260), (45, 484692), (52, 419445), (54, 403910), (60, 363519), (65, 335556), (78, 279630), (90, 242346), (108, 201955), (117, 186420), (130, 167778), (135, 161564), (156, 139815), (169, 129060), (180, 121173), (195, 111852), (234, 93210), (239, 91260), (260, 83889), (270, 80782), (338, 64530), (351, 62140), (390, 55926), (468, 46605), (478, 45630), (507, 43020), (540, 40391), (585, 37284), (676, 32265), (702, 31070), (717, 30420), (780, 27963), (845, 25812), (956, 22815), (1014, 21510), (1170, 18642), (1195, 18252), (1404, 15535), (1434, 15210), (1521, 14340), (1690, 12906), (1755, 12428), (2028, 10755), (2151, 10140), (2340, 9321), (2390, 9126), (2535, 8604), (2868, 7605), (3042, 7170), (3107, 7020), (3380, 6453), (3510, 6214), (3585, 6084), (4302, 5070), (4563, 4780)]