19900125

素因数分解:

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

素因数の和:73

約数の個数: 108

約数和(自身を含む): 44042076

約数和(自身を除く): 24141951

約数列:

[1, 3, 5, 7, 9, 15, 19, 21, 25, 35, 45, 49, 57, 63, 75, 95, 105, 125, 133, 147, 171, 175, 225, 245, 285, 315, 361, 375, 399, 441, 475, 525, 665, 735, 855, 875, 931, 1083, 1125, 1197, 1225, 1425, 1575, 1805, 1995, 2205, 2375, 2527, 2625, 2793, 3249, 3325, 3675, 4275, 4655, 5415, 5985, 6125, 7125, 7581, 7875, 8379, 9025, 9975, 11025, 12635, 13965, 16245, 16625, 17689, 18375, 21375, 22743, 23275, 27075, 29925, 37905, 41895, 45125, 49875, 53067, 55125, 63175, 69825, 81225, 88445, 113715, 116375, 135375, 149625, 159201, 189525, 209475, 265335, 315875, 349125, 406125, 442225, 568575, 796005, 947625, 1047375, 1326675, 2211125, 2842875, 3980025, 6633375, 19900125]

約数ペア:

[(1, 19900125), (3, 6633375), (5, 3980025), (7, 2842875), (9, 2211125), (15, 1326675), (19, 1047375), (21, 947625), (25, 796005), (35, 568575), (45, 442225), (49, 406125), (57, 349125), (63, 315875), (75, 265335), (95, 209475), (105, 189525), (125, 159201), (133, 149625), (147, 135375), (171, 116375), (175, 113715), (225, 88445), (245, 81225), (285, 69825), (315, 63175), (361, 55125), (375, 53067), (399, 49875), (441, 45125), (475, 41895), (525, 37905), (665, 29925), (735, 27075), (855, 23275), (875, 22743), (931, 21375), (1083, 18375), (1125, 17689), (1197, 16625), (1225, 16245), (1425, 13965), (1575, 12635), (1805, 11025), (1995, 9975), (2205, 9025), (2375, 8379), (2527, 7875), (2625, 7581), (2793, 7125), (3249, 6125), (3325, 5985), (3675, 5415), (4275, 4655)]