21063420

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{73}}^1\times {\mathrm{229}}^1$

素因数の和:324

約数の個数: 144

約数和(自身を含む): 74343360

約数和(自身を除く): 53279940

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 35, 36, 42, 45, 60, 63, 70, 73, 84, 90, 105, 126, 140, 146, 180, 210, 219, 229, 252, 292, 315, 365, 420, 438, 458, 511, 630, 657, 687, 730, 876, 916, 1022, 1095, 1145, 1260, 1314, 1374, 1460, 1533, 1603, 2044, 2061, 2190, 2290, 2555, 2628, 2748, 3066, 3206, 3285, 3435, 4122, 4380, 4580, 4599, 4809, 5110, 6132, 6412, 6570, 6870, 7665, 8015, 8244, 9198, 9618, 10220, 10305, 13140, 13740, 14427, 15330, 16030, 16717, 18396, 19236, 20610, 22995, 24045, 28854, 30660, 32060, 33434, 41220, 45990, 48090, 50151, 57708, 66868, 72135, 83585, 91980, 96180, 100302, 117019, 144270, 150453, 167170, 200604, 234038, 250755, 288540, 300906, 334340, 351057, 468076, 501510, 585095, 601812, 702114, 752265, 1003020, 1053171, 1170190, 1404228, 1504530, 1755285, 2106342, 2340380, 3009060, 3510570, 4212684, 5265855, 7021140, 10531710, 21063420]

約数ペア:

[(1, 21063420), (2, 10531710), (3, 7021140), (4, 5265855), (5, 4212684), (6, 3510570), (7, 3009060), (9, 2340380), (10, 2106342), (12, 1755285), (14, 1504530), (15, 1404228), (18, 1170190), (20, 1053171), (21, 1003020), (28, 752265), (30, 702114), (35, 601812), (36, 585095), (42, 501510), (45, 468076), (60, 351057), (63, 334340), (70, 300906), (73, 288540), (84, 250755), (90, 234038), (105, 200604), (126, 167170), (140, 150453), (146, 144270), (180, 117019), (210, 100302), (219, 96180), (229, 91980), (252, 83585), (292, 72135), (315, 66868), (365, 57708), (420, 50151), (438, 48090), (458, 45990), (511, 41220), (630, 33434), (657, 32060), (687, 30660), (730, 28854), (876, 24045), (916, 22995), (1022, 20610), (1095, 19236), (1145, 18396), (1260, 16717), (1314, 16030), (1374, 15330), (1460, 14427), (1533, 13740), (1603, 13140), (2044, 10305), (2061, 10220), (2190, 9618), (2290, 9198), (2555, 8244), (2628, 8015), (2748, 7665), (3066, 6870), (3206, 6570), (3285, 6412), (3435, 6132), (4122, 5110), (4380, 4809), (4580, 4599)]