8221720

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{97}}^1\times {\mathrm{163}}^1$

素因数の和:284

約数の個数: 64

約数和(自身を含む): 20250720

約数和(自身を除く): 12029000

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 97, 104, 130, 163, 194, 260, 326, 388, 485, 520, 652, 776, 815, 970, 1261, 1304, 1630, 1940, 2119, 2522, 3260, 3880, 4238, 5044, 6305, 6520, 8476, 10088, 10595, 12610, 15811, 16952, 21190, 25220, 31622, 42380, 50440, 63244, 79055, 84760, 126488, 158110, 205543, 316220, 411086, 632440, 822172, 1027715, 1644344, 2055430, 4110860, 8221720]

約数ペア:

[(1, 8221720), (2, 4110860), (4, 2055430), (5, 1644344), (8, 1027715), (10, 822172), (13, 632440), (20, 411086), (26, 316220), (40, 205543), (52, 158110), (65, 126488), (97, 84760), (104, 79055), (130, 63244), (163, 50440), (194, 42380), (260, 31622), (326, 25220), (388, 21190), (485, 16952), (520, 15811), (652, 12610), (776, 10595), (815, 10088), (970, 8476), (1261, 6520), (1304, 6305), (1630, 5044), (1940, 4238), (2119, 3880), (2522, 3260)]