21641340

素因数分解:

$2^2\times 3^1\times 5^1\times 7^2\times {\mathrm{17}}^1\times {\mathrm{433}}^1$

素因数の和:476

約数の個数: 144

約数和(自身を含む): 74807712

約数和(自身を除く): 53166372

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 17, 20, 21, 28, 30, 34, 35, 42, 49, 51, 60, 68, 70, 84, 85, 98, 102, 105, 119, 140, 147, 170, 196, 204, 210, 238, 245, 255, 294, 340, 357, 420, 433, 476, 490, 510, 588, 595, 714, 735, 833, 866, 980, 1020, 1190, 1299, 1428, 1470, 1666, 1732, 1785, 2165, 2380, 2499, 2598, 2940, 3031, 3332, 3570, 4165, 4330, 4998, 5196, 6062, 6495, 7140, 7361, 8330, 8660, 9093, 9996, 12124, 12495, 12990, 14722, 15155, 16660, 18186, 21217, 22083, 24990, 25980, 29444, 30310, 36372, 36805, 42434, 44166, 45465, 49980, 51527, 60620, 63651, 73610, 84868, 88332, 90930, 103054, 106085, 110415, 127302, 147220, 154581, 181860, 206108, 212170, 220830, 254604, 257635, 309162, 318255, 360689, 424340, 441660, 515270, 618324, 636510, 721378, 772905, 1030540, 1082067, 1273020, 1442756, 1545810, 1803445, 2164134, 3091620, 3606890, 4328268, 5410335, 7213780, 10820670, 21641340]

約数ペア:

[(1, 21641340), (2, 10820670), (3, 7213780), (4, 5410335), (5, 4328268), (6, 3606890), (7, 3091620), (10, 2164134), (12, 1803445), (14, 1545810), (15, 1442756), (17, 1273020), (20, 1082067), (21, 1030540), (28, 772905), (30, 721378), (34, 636510), (35, 618324), (42, 515270), (49, 441660), (51, 424340), (60, 360689), (68, 318255), (70, 309162), (84, 257635), (85, 254604), (98, 220830), (102, 212170), (105, 206108), (119, 181860), (140, 154581), (147, 147220), (170, 127302), (196, 110415), (204, 106085), (210, 103054), (238, 90930), (245, 88332), (255, 84868), (294, 73610), (340, 63651), (357, 60620), (420, 51527), (433, 49980), (476, 45465), (490, 44166), (510, 42434), (588, 36805), (595, 36372), (714, 30310), (735, 29444), (833, 25980), (866, 24990), (980, 22083), (1020, 21217), (1190, 18186), (1299, 16660), (1428, 15155), (1470, 14722), (1666, 12990), (1732, 12495), (1785, 12124), (2165, 9996), (2380, 9093), (2499, 8660), (2598, 8330), (2940, 7361), (3031, 7140), (3332, 6495), (3570, 6062), (4165, 5196), (4330, 4998)]