400825815

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{61}}^1\times {\mathrm{1087}}^1$

素因数の和:1200

約数の個数: 64

約数和(自身を含む): 725286912

約数和(自身を除く): 324461097

約数列:

[1, 3, 5, 13, 15, 31, 39, 61, 65, 93, 155, 183, 195, 305, 403, 465, 793, 915, 1087, 1209, 1891, 2015, 2379, 3261, 3965, 5435, 5673, 6045, 9455, 11895, 14131, 16305, 24583, 28365, 33697, 42393, 66307, 70655, 73749, 101091, 122915, 168485, 198921, 211965, 331535, 368745, 438061, 505455, 861991, 994605, 1314183, 2055517, 2190305, 2585973, 4309955, 6166551, 6570915, 10277585, 12929865, 26721721, 30832755, 80165163, 133608605, 400825815]

約数ペア:

[(1, 400825815), (3, 133608605), (5, 80165163), (13, 30832755), (15, 26721721), (31, 12929865), (39, 10277585), (61, 6570915), (65, 6166551), (93, 4309955), (155, 2585973), (183, 2190305), (195, 2055517), (305, 1314183), (403, 994605), (465, 861991), (793, 505455), (915, 438061), (1087, 368745), (1209, 331535), (1891, 211965), (2015, 198921), (2379, 168485), (3261, 122915), (3965, 101091), (5435, 73749), (5673, 70655), (6045, 66307), (9455, 42393), (11895, 33697), (14131, 28365), (16305, 24583)]