21284536

素因数分解:

$2^3\times 7^1\times {\mathrm{13}}^3\times {\mathrm{173}}^1$

素因数の和:225

約数の個数: 64

約数和(自身を含む): 49694400

約数和(自身を除く): 28409864

約数列:

[1, 2, 4, 7, 8, 13, 14, 26, 28, 52, 56, 91, 104, 169, 173, 182, 338, 346, 364, 676, 692, 728, 1183, 1211, 1352, 1384, 2197, 2249, 2366, 2422, 4394, 4498, 4732, 4844, 8788, 8996, 9464, 9688, 15379, 15743, 17576, 17992, 29237, 30758, 31486, 58474, 61516, 62972, 116948, 123032, 125944, 204659, 233896, 380081, 409318, 760162, 818636, 1520324, 1637272, 2660567, 3040648, 5321134, 10642268, 21284536]

約数ペア:

[(1, 21284536), (2, 10642268), (4, 5321134), (7, 3040648), (8, 2660567), (13, 1637272), (14, 1520324), (26, 818636), (28, 760162), (52, 409318), (56, 380081), (91, 233896), (104, 204659), (169, 125944), (173, 123032), (182, 116948), (338, 62972), (346, 61516), (364, 58474), (676, 31486), (692, 30758), (728, 29237), (1183, 17992), (1211, 17576), (1352, 15743), (1384, 15379), (2197, 9688), (2249, 9464), (2366, 8996), (2422, 8788), (4394, 4844), (4498, 4732)]