217505960

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{79}}^1\times {\mathrm{9833}}^1$

素因数の和:9930

約数の個数: 64

約数和(自身を含む): 566438400

約数和(自身を除く): 348932440

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 79, 140, 158, 280, 316, 395, 553, 632, 790, 1106, 1580, 2212, 2765, 3160, 4424, 5530, 9833, 11060, 19666, 22120, 39332, 49165, 68831, 78664, 98330, 137662, 196660, 275324, 344155, 393320, 550648, 688310, 776807, 1376620, 1553614, 2753240, 3107228, 3884035, 5437649, 6214456, 7768070, 10875298, 15536140, 21750596, 27188245, 31072280, 43501192, 54376490, 108752980, 217505960]

約数ペア:

[(1, 217505960), (2, 108752980), (4, 54376490), (5, 43501192), (7, 31072280), (8, 27188245), (10, 21750596), (14, 15536140), (20, 10875298), (28, 7768070), (35, 6214456), (40, 5437649), (56, 3884035), (70, 3107228), (79, 2753240), (140, 1553614), (158, 1376620), (280, 776807), (316, 688310), (395, 550648), (553, 393320), (632, 344155), (790, 275324), (1106, 196660), (1580, 137662), (2212, 98330), (2765, 78664), (3160, 68831), (4424, 49165), (5530, 39332), (9833, 22120), (11060, 19666)]