402780

素因数分解:

$2^2\times 3^1\times 5^1\times 7^2\times {\mathrm{137}}^1$

素因数の和:163

約数の個数: 72

約数和(自身を含む): 1321488

約数和(自身を除く): 918708

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 49, 60, 70, 84, 98, 105, 137, 140, 147, 196, 210, 245, 274, 294, 411, 420, 490, 548, 588, 685, 735, 822, 959, 980, 1370, 1470, 1644, 1918, 2055, 2740, 2877, 2940, 3836, 4110, 4795, 5754, 6713, 8220, 9590, 11508, 13426, 14385, 19180, 20139, 26852, 28770, 33565, 40278, 57540, 67130, 80556, 100695, 134260, 201390, 402780]

約数ペア:

[(1, 402780), (2, 201390), (3, 134260), (4, 100695), (5, 80556), (6, 67130), (7, 57540), (10, 40278), (12, 33565), (14, 28770), (15, 26852), (20, 20139), (21, 19180), (28, 14385), (30, 13426), (35, 11508), (42, 9590), (49, 8220), (60, 6713), (70, 5754), (84, 4795), (98, 4110), (105, 3836), (137, 2940), (140, 2877), (147, 2740), (196, 2055), (210, 1918), (245, 1644), (274, 1470), (294, 1370), (411, 980), (420, 959), (490, 822), (548, 735), (588, 685)]