20459075

素因数分解:

$5^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{23}}^2$

素因数の和:93

約数の個数: 72

約数和(自身を含む): 34560288

約数和(自身を除く): 14101213

約数列:

[1, 5, 7, 13, 17, 23, 25, 35, 65, 85, 91, 115, 119, 161, 175, 221, 299, 325, 391, 425, 455, 529, 575, 595, 805, 1105, 1495, 1547, 1955, 2093, 2275, 2645, 2737, 2975, 3703, 4025, 5083, 5525, 6877, 7475, 7735, 8993, 9775, 10465, 13225, 13685, 18515, 25415, 34385, 35581, 38675, 44965, 48139, 52325, 62951, 68425, 92575, 116909, 127075, 171925, 177905, 224825, 240695, 314755, 584545, 818363, 889525, 1203475, 1573775, 2922725, 4091815, 20459075]

約数ペア:

[(1, 20459075), (5, 4091815), (7, 2922725), (13, 1573775), (17, 1203475), (23, 889525), (25, 818363), (35, 584545), (65, 314755), (85, 240695), (91, 224825), (115, 177905), (119, 171925), (161, 127075), (175, 116909), (221, 92575), (299, 68425), (325, 62951), (391, 52325), (425, 48139), (455, 44965), (529, 38675), (575, 35581), (595, 34385), (805, 25415), (1105, 18515), (1495, 13685), (1547, 13225), (1955, 10465), (2093, 9775), (2275, 8993), (2645, 7735), (2737, 7475), (2975, 6877), (3703, 5525), (4025, 5083)]