21980310

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{1549}}^1$

素因数の和:1613

約数の個数: 64

約数和(自身を含む): 58924800

約数和(自身を除く): 36944490

約数列:

[1, 2, 3, 5, 6, 10, 11, 15, 22, 30, 33, 43, 55, 66, 86, 110, 129, 165, 215, 258, 330, 430, 473, 645, 946, 1290, 1419, 1549, 2365, 2838, 3098, 4647, 4730, 7095, 7745, 9294, 14190, 15490, 17039, 23235, 34078, 46470, 51117, 66607, 85195, 102234, 133214, 170390, 199821, 255585, 333035, 399642, 511170, 666070, 732677, 999105, 1465354, 1998210, 2198031, 3663385, 4396062, 7326770, 10990155, 21980310]

約数ペア:

[(1, 21980310), (2, 10990155), (3, 7326770), (5, 4396062), (6, 3663385), (10, 2198031), (11, 1998210), (15, 1465354), (22, 999105), (30, 732677), (33, 666070), (43, 511170), (55, 399642), (66, 333035), (86, 255585), (110, 199821), (129, 170390), (165, 133214), (215, 102234), (258, 85195), (330, 66607), (430, 51117), (473, 46470), (645, 34078), (946, 23235), (1290, 17039), (1419, 15490), (1549, 14190), (2365, 9294), (2838, 7745), (3098, 7095), (4647, 4730)]