21179704

素因数分解:

$2^3\times 7^1\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{619}}^1$

素因数の和:692

約数の個数: 64

約数和(自身を含む): 49996800

約数和(自身を除く): 28817096

約数列:

[1, 2, 4, 7, 8, 13, 14, 26, 28, 47, 52, 56, 91, 94, 104, 182, 188, 329, 364, 376, 611, 619, 658, 728, 1222, 1238, 1316, 2444, 2476, 2632, 4277, 4333, 4888, 4952, 8047, 8554, 8666, 16094, 17108, 17332, 29093, 32188, 34216, 34664, 56329, 58186, 64376, 112658, 116372, 203651, 225316, 232744, 378209, 407302, 450632, 756418, 814604, 1512836, 1629208, 2647463, 3025672, 5294926, 10589852, 21179704]

約数ペア:

[(1, 21179704), (2, 10589852), (4, 5294926), (7, 3025672), (8, 2647463), (13, 1629208), (14, 1512836), (26, 814604), (28, 756418), (47, 450632), (52, 407302), (56, 378209), (91, 232744), (94, 225316), (104, 203651), (182, 116372), (188, 112658), (329, 64376), (364, 58186), (376, 56329), (611, 34664), (619, 34216), (658, 32188), (728, 29093), (1222, 17332), (1238, 17108), (1316, 16094), (2444, 8666), (2476, 8554), (2632, 8047), (4277, 4952), (4333, 4888)]