217543340

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{139}}^1\times {\mathrm{1597}}^1$

素因数の和:1759

約数の個数: 72

約数和(自身を含む): 535585680

約数和(自身を除く): 318042340

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 139, 140, 196, 245, 278, 490, 556, 695, 973, 980, 1390, 1597, 1946, 2780, 3194, 3892, 4865, 6388, 6811, 7985, 9730, 11179, 13622, 15970, 19460, 22358, 27244, 31940, 34055, 44716, 55895, 68110, 78253, 111790, 136220, 156506, 221983, 223580, 313012, 391265, 443966, 782530, 887932, 1109915, 1553881, 1565060, 2219830, 3107762, 4439660, 6215524, 7769405, 10877167, 15538810, 21754334, 31077620, 43508668, 54385835, 108771670, 217543340]

約数ペア:

[(1, 217543340), (2, 108771670), (4, 54385835), (5, 43508668), (7, 31077620), (10, 21754334), (14, 15538810), (20, 10877167), (28, 7769405), (35, 6215524), (49, 4439660), (70, 3107762), (98, 2219830), (139, 1565060), (140, 1553881), (196, 1109915), (245, 887932), (278, 782530), (490, 443966), (556, 391265), (695, 313012), (973, 223580), (980, 221983), (1390, 156506), (1597, 136220), (1946, 111790), (2780, 78253), (3194, 68110), (3892, 55895), (4865, 44716), (6388, 34055), (6811, 31940), (7985, 27244), (9730, 22358), (11179, 19460), (13622, 15970)]