20816670

素因数分解:

$2^1\times 3^1\times 5^1\times 7^4\times {\mathrm{17}}^2$

素因数の和:72

約数の個数: 120

約数和(自身を含む): 61913304

約数和(自身を除く): 41096634

約数列:

[1, 2, 3, 5, 6, 7, 10, 14, 15, 17, 21, 30, 34, 35, 42, 49, 51, 70, 85, 98, 102, 105, 119, 147, 170, 210, 238, 245, 255, 289, 294, 343, 357, 490, 510, 578, 595, 686, 714, 735, 833, 867, 1029, 1190, 1445, 1470, 1666, 1715, 1734, 1785, 2023, 2058, 2401, 2499, 2890, 3430, 3570, 4046, 4165, 4335, 4802, 4998, 5145, 5831, 6069, 7203, 8330, 8670, 10115, 10290, 11662, 12005, 12138, 12495, 14161, 14406, 17493, 20230, 24010, 24990, 28322, 29155, 30345, 34986, 36015, 40817, 42483, 58310, 60690, 70805, 72030, 81634, 84966, 87465, 99127, 122451, 141610, 174930, 198254, 204085, 212415, 244902, 297381, 408170, 424830, 495635, 594762, 612255, 693889, 991270, 1224510, 1387778, 1486905, 2081667, 2973810, 3469445, 4163334, 6938890, 10408335, 20816670]

約数ペア:

[(1, 20816670), (2, 10408335), (3, 6938890), (5, 4163334), (6, 3469445), (7, 2973810), (10, 2081667), (14, 1486905), (15, 1387778), (17, 1224510), (21, 991270), (30, 693889), (34, 612255), (35, 594762), (42, 495635), (49, 424830), (51, 408170), (70, 297381), (85, 244902), (98, 212415), (102, 204085), (105, 198254), (119, 174930), (147, 141610), (170, 122451), (210, 99127), (238, 87465), (245, 84966), (255, 81634), (289, 72030), (294, 70805), (343, 60690), (357, 58310), (490, 42483), (510, 40817), (578, 36015), (595, 34986), (686, 30345), (714, 29155), (735, 28322), (833, 24990), (867, 24010), (1029, 20230), (1190, 17493), (1445, 14406), (1470, 14161), (1666, 12495), (1715, 12138), (1734, 12005), (1785, 11662), (2023, 10290), (2058, 10115), (2401, 8670), (2499, 8330), (2890, 7203), (3430, 6069), (3570, 5831), (4046, 5145), (4165, 4998), (4335, 4802)]