20204925

素因数分解:

$3^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{53}}^1$

素因数の和:119

約数の個数: 96

約数和(自身を含む): 40497408

約数和(自身を除く): 20292483

約数列:

[1, 3, 5, 13, 15, 17, 23, 25, 39, 51, 53, 65, 69, 75, 85, 115, 159, 195, 221, 255, 265, 299, 325, 345, 391, 425, 575, 663, 689, 795, 897, 901, 975, 1105, 1173, 1219, 1275, 1325, 1495, 1725, 1955, 2067, 2703, 3315, 3445, 3657, 3975, 4485, 4505, 5083, 5525, 5865, 6095, 7475, 9775, 10335, 11713, 13515, 15249, 15847, 16575, 17225, 18285, 20723, 22425, 22525, 25415, 29325, 30475, 35139, 47541, 51675, 58565, 62169, 67575, 76245, 79235, 91425, 103615, 127075, 175695, 237705, 269399, 292825, 310845, 381225, 396175, 518075, 808197, 878475, 1188525, 1346995, 1554225, 4040985, 6734975, 20204925]

約数ペア:

[(1, 20204925), (3, 6734975), (5, 4040985), (13, 1554225), (15, 1346995), (17, 1188525), (23, 878475), (25, 808197), (39, 518075), (51, 396175), (53, 381225), (65, 310845), (69, 292825), (75, 269399), (85, 237705), (115, 175695), (159, 127075), (195, 103615), (221, 91425), (255, 79235), (265, 76245), (299, 67575), (325, 62169), (345, 58565), (391, 51675), (425, 47541), (575, 35139), (663, 30475), (689, 29325), (795, 25415), (897, 22525), (901, 22425), (975, 20723), (1105, 18285), (1173, 17225), (1219, 16575), (1275, 15847), (1325, 15249), (1495, 13515), (1725, 11713), (1955, 10335), (2067, 9775), (2703, 7475), (3315, 6095), (3445, 5865), (3657, 5525), (3975, 5083), (4485, 4505)]