12623980

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{139}}^1\times {\mathrm{239}}^1$

素因数の和:406

約数の個数: 48

約数和(自身を含む): 28224000

約数和(自身を除く): 15600020

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 139, 190, 239, 278, 380, 478, 556, 695, 956, 1195, 1390, 2390, 2641, 2780, 4541, 4780, 5282, 9082, 10564, 13205, 18164, 22705, 26410, 33221, 45410, 52820, 66442, 90820, 132884, 166105, 332210, 631199, 664420, 1262398, 2524796, 3155995, 6311990, 12623980]

約数ペア:

[(1, 12623980), (2, 6311990), (4, 3155995), (5, 2524796), (10, 1262398), (19, 664420), (20, 631199), (38, 332210), (76, 166105), (95, 132884), (139, 90820), (190, 66442), (239, 52820), (278, 45410), (380, 33221), (478, 26410), (556, 22705), (695, 18164), (956, 13205), (1195, 10564), (1390, 9082), (2390, 5282), (2641, 4780), (2780, 4541)]