20554300

素因数分解:

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

素因数の和:287

約数の個数: 72

約数和(自身を含む): 48826736

約数和(自身を除く): 28272436

約数列:

[1, 2, 4, 5, 10, 13, 20, 25, 26, 50, 52, 65, 97, 100, 130, 163, 194, 260, 325, 326, 388, 485, 650, 652, 815, 970, 1261, 1300, 1630, 1940, 2119, 2425, 2522, 3260, 4075, 4238, 4850, 5044, 6305, 8150, 8476, 9700, 10595, 12610, 15811, 16300, 21190, 25220, 31525, 31622, 42380, 52975, 63050, 63244, 79055, 105950, 126100, 158110, 205543, 211900, 316220, 395275, 411086, 790550, 822172, 1027715, 1581100, 2055430, 4110860, 5138575, 10277150, 20554300]

約数ペア:

[(1, 20554300), (2, 10277150), (4, 5138575), (5, 4110860), (10, 2055430), (13, 1581100), (20, 1027715), (25, 822172), (26, 790550), (50, 411086), (52, 395275), (65, 316220), (97, 211900), (100, 205543), (130, 158110), (163, 126100), (194, 105950), (260, 79055), (325, 63244), (326, 63050), (388, 52975), (485, 42380), (650, 31622), (652, 31525), (815, 25220), (970, 21190), (1261, 16300), (1300, 15811), (1630, 12610), (1940, 10595), (2119, 9700), (2425, 8476), (2522, 8150), (3260, 6305), (4075, 5044), (4238, 4850)]