21634900

素因数分解:

$2^2\times 5^2\times 7^1\times {\mathrm{31}}^1\times {\mathrm{997}}^1$

素因数の和:1049

約数の個数: 72

約数和(自身を含む): 55440896

約数和(自身を除く): 33805996

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 25, 28, 31, 35, 50, 62, 70, 100, 124, 140, 155, 175, 217, 310, 350, 434, 620, 700, 775, 868, 997, 1085, 1550, 1994, 2170, 3100, 3988, 4340, 4985, 5425, 6979, 9970, 10850, 13958, 19940, 21700, 24925, 27916, 30907, 34895, 49850, 61814, 69790, 99700, 123628, 139580, 154535, 174475, 216349, 309070, 348950, 432698, 618140, 697900, 772675, 865396, 1081745, 1545350, 2163490, 3090700, 4326980, 5408725, 10817450, 21634900]

約数ペア:

[(1, 21634900), (2, 10817450), (4, 5408725), (5, 4326980), (7, 3090700), (10, 2163490), (14, 1545350), (20, 1081745), (25, 865396), (28, 772675), (31, 697900), (35, 618140), (50, 432698), (62, 348950), (70, 309070), (100, 216349), (124, 174475), (140, 154535), (155, 139580), (175, 123628), (217, 99700), (310, 69790), (350, 61814), (434, 49850), (620, 34895), (700, 30907), (775, 27916), (868, 24925), (997, 21700), (1085, 19940), (1550, 13958), (1994, 10850), (2170, 9970), (3100, 6979), (3988, 5425), (4340, 4985)]