20319075

素因数分解:

$3^2\times 5^2\times 7^2\times {\mathrm{19}}^1\times {\mathrm{97}}^1$

素因数の和:146

約数の個数: 108

約数和(自身を含む): 45023160

約数和(自身を除く): 24704085

約数列:

[1, 3, 5, 7, 9, 15, 19, 21, 25, 35, 45, 49, 57, 63, 75, 95, 97, 105, 133, 147, 171, 175, 225, 245, 285, 291, 315, 399, 441, 475, 485, 525, 665, 679, 735, 855, 873, 931, 1197, 1225, 1425, 1455, 1575, 1843, 1995, 2037, 2205, 2425, 2793, 3325, 3395, 3675, 4275, 4365, 4655, 4753, 5529, 5985, 6111, 7275, 8379, 9215, 9975, 10185, 11025, 12901, 13965, 14259, 16587, 16975, 21825, 23275, 23765, 27645, 29925, 30555, 38703, 41895, 42777, 46075, 50925, 64505, 69825, 71295, 82935, 90307, 116109, 118825, 138225, 152775, 193515, 209475, 213885, 270921, 322525, 356475, 414675, 451535, 580545, 812763, 967575, 1069425, 1354605, 2257675, 2902725, 4063815, 6773025, 20319075]

約数ペア:

[(1, 20319075), (3, 6773025), (5, 4063815), (7, 2902725), (9, 2257675), (15, 1354605), (19, 1069425), (21, 967575), (25, 812763), (35, 580545), (45, 451535), (49, 414675), (57, 356475), (63, 322525), (75, 270921), (95, 213885), (97, 209475), (105, 193515), (133, 152775), (147, 138225), (171, 118825), (175, 116109), (225, 90307), (245, 82935), (285, 71295), (291, 69825), (315, 64505), (399, 50925), (441, 46075), (475, 42777), (485, 41895), (525, 38703), (665, 30555), (679, 29925), (735, 27645), (855, 23765), (873, 23275), (931, 21825), (1197, 16975), (1225, 16587), (1425, 14259), (1455, 13965), (1575, 12901), (1843, 11025), (1995, 10185), (2037, 9975), (2205, 9215), (2425, 8379), (2793, 7275), (3325, 6111), (3395, 5985), (3675, 5529), (4275, 4753), (4365, 4655)]