21000456828

素因数分解:

$2^2\times 3^2\times {\mathrm{13}}^1\times {\mathrm{233}}^1\times {\mathrm{192587}}^1$

素因数の和:192843

約数の個数: 72

約数和(自身を含む): 57413564208

約数和(自身を除く): 36413107380

約数列:

[1, 2, 3, 4, 6, 9, 12, 13, 18, 26, 36, 39, 52, 78, 117, 156, 233, 234, 466, 468, 699, 932, 1398, 2097, 2796, 3029, 4194, 6058, 8388, 9087, 12116, 18174, 27261, 36348, 54522, 109044, 192587, 385174, 577761, 770348, 1155522, 1733283, 2311044, 2503631, 3466566, 5007262, 6933132, 7510893, 10014524, 15021786, 22532679, 30043572, 44872771, 45065358, 89745542, 90130716, 134618313, 179491084, 269236626, 403854939, 538473252, 583346023, 807709878, 1166692046, 1615419756, 1750038069, 2333384092, 3500076138, 5250114207, 7000152276, 10500228414, 21000456828]

約数ペア:

[(1, 21000456828), (2, 10500228414), (3, 7000152276), (4, 5250114207), (6, 3500076138), (9, 2333384092), (12, 1750038069), (13, 1615419756), (18, 1166692046), (26, 807709878), (36, 583346023), (39, 538473252), (52, 403854939), (78, 269236626), (117, 179491084), (156, 134618313), (233, 90130716), (234, 89745542), (466, 45065358), (468, 44872771), (699, 30043572), (932, 22532679), (1398, 15021786), (2097, 10014524), (2796, 7510893), (3029, 6933132), (4194, 5007262), (6058, 3466566), (8388, 2503631), (9087, 2311044), (12116, 1733283), (18174, 1155522), (27261, 770348), (36348, 577761), (54522, 385174), (109044, 192587)]