19757640

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{43}}^1\times {\mathrm{547}}^1$

素因数の和:611

約数の個数: 128

約数和(自身を含む): 69442560

約数和(自身を除く): 49684920

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 35, 40, 42, 43, 56, 60, 70, 84, 86, 105, 120, 129, 140, 168, 172, 210, 215, 258, 280, 301, 344, 420, 430, 516, 547, 602, 645, 840, 860, 903, 1032, 1094, 1204, 1290, 1505, 1641, 1720, 1806, 2188, 2408, 2580, 2735, 3010, 3282, 3612, 3829, 4376, 4515, 5160, 5470, 6020, 6564, 7224, 7658, 8205, 9030, 10940, 11487, 12040, 13128, 15316, 16410, 18060, 19145, 21880, 22974, 23521, 30632, 32820, 36120, 38290, 45948, 47042, 57435, 65640, 70563, 76580, 91896, 94084, 114870, 117605, 141126, 153160, 164647, 188168, 229740, 235210, 282252, 329294, 352815, 459480, 470420, 493941, 564504, 658588, 705630, 823235, 940840, 987882, 1317176, 1411260, 1646470, 1975764, 2469705, 2822520, 3292940, 3951528, 4939410, 6585880, 9878820, 19757640]

約数ペア:

[(1, 19757640), (2, 9878820), (3, 6585880), (4, 4939410), (5, 3951528), (6, 3292940), (7, 2822520), (8, 2469705), (10, 1975764), (12, 1646470), (14, 1411260), (15, 1317176), (20, 987882), (21, 940840), (24, 823235), (28, 705630), (30, 658588), (35, 564504), (40, 493941), (42, 470420), (43, 459480), (56, 352815), (60, 329294), (70, 282252), (84, 235210), (86, 229740), (105, 188168), (120, 164647), (129, 153160), (140, 141126), (168, 117605), (172, 114870), (210, 94084), (215, 91896), (258, 76580), (280, 70563), (301, 65640), (344, 57435), (420, 47042), (430, 45948), (516, 38290), (547, 36120), (602, 32820), (645, 30632), (840, 23521), (860, 22974), (903, 21880), (1032, 19145), (1094, 18060), (1204, 16410), (1290, 15316), (1505, 13128), (1641, 12040), (1720, 11487), (1806, 10940), (2188, 9030), (2408, 8205), (2580, 7658), (2735, 7224), (3010, 6564), (3282, 6020), (3612, 5470), (3829, 5160), (4376, 4515)]