21022925

素因数分解:

$5^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{67}}^1\times {\mathrm{163}}^1$

素因数の和:258

約数の個数: 48

約数和(自身を含む): 33188352

約数和(自身を除く): 12165427

約数列:

[1, 5, 7, 11, 25, 35, 55, 67, 77, 163, 175, 275, 335, 385, 469, 737, 815, 1141, 1675, 1793, 1925, 2345, 3685, 4075, 5159, 5705, 8965, 10921, 11725, 12551, 18425, 25795, 28525, 44825, 54605, 62755, 76447, 120131, 128975, 273025, 313775, 382235, 600655, 840917, 1911175, 3003275, 4204585, 21022925]

約数ペア:

[(1, 21022925), (5, 4204585), (7, 3003275), (11, 1911175), (25, 840917), (35, 600655), (55, 382235), (67, 313775), (77, 273025), (163, 128975), (175, 120131), (275, 76447), (335, 62755), (385, 54605), (469, 44825), (737, 28525), (815, 25795), (1141, 18425), (1675, 12551), (1793, 11725), (1925, 10921), (2345, 8965), (3685, 5705), (4075, 5159)]