21323967

素因数分解:

$3^1\times 7^3\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{53}}^1$

素因数の和:117

約数の個数: 64

約数和(自身を含む): 37324800

約数和(自身を除く): 16000833

約数列:

[1, 3, 7, 17, 21, 23, 49, 51, 53, 69, 119, 147, 159, 161, 343, 357, 371, 391, 483, 833, 901, 1029, 1113, 1127, 1173, 1219, 2499, 2597, 2703, 2737, 3381, 3657, 5831, 6307, 7791, 7889, 8211, 8533, 17493, 18179, 18921, 19159, 20723, 23667, 25599, 44149, 54537, 57477, 59731, 62169, 132447, 134113, 145061, 179193, 309043, 402339, 418117, 435183, 927129, 1015427, 1254351, 3046281, 7107989, 21323967]

約数ペア:

[(1, 21323967), (3, 7107989), (7, 3046281), (17, 1254351), (21, 1015427), (23, 927129), (49, 435183), (51, 418117), (53, 402339), (69, 309043), (119, 179193), (147, 145061), (159, 134113), (161, 132447), (343, 62169), (357, 59731), (371, 57477), (391, 54537), (483, 44149), (833, 25599), (901, 23667), (1029, 20723), (1113, 19159), (1127, 18921), (1173, 18179), (1219, 17493), (2499, 8533), (2597, 8211), (2703, 7889), (2737, 7791), (3381, 6307), (3657, 5831)]