21474944

素因数分解:

$2^7\times {\mathrm{17}}^1\times {\mathrm{71}}^1\times {\mathrm{139}}^1$

素因数の和:241

約数の個数: 64

約数和(自身を含む): 46267200

約数和(自身を除く): 24792256

約数列:

[1, 2, 4, 8, 16, 17, 32, 34, 64, 68, 71, 128, 136, 139, 142, 272, 278, 284, 544, 556, 568, 1088, 1112, 1136, 1207, 2176, 2224, 2272, 2363, 2414, 4448, 4544, 4726, 4828, 8896, 9088, 9452, 9656, 9869, 17792, 18904, 19312, 19738, 37808, 38624, 39476, 75616, 77248, 78952, 151232, 154496, 157904, 167773, 302464, 315808, 335546, 631616, 671092, 1263232, 1342184, 2684368, 5368736, 10737472, 21474944]

約数ペア:

[(1, 21474944), (2, 10737472), (4, 5368736), (8, 2684368), (16, 1342184), (17, 1263232), (32, 671092), (34, 631616), (64, 335546), (68, 315808), (71, 302464), (128, 167773), (136, 157904), (139, 154496), (142, 151232), (272, 78952), (278, 77248), (284, 75616), (544, 39476), (556, 38624), (568, 37808), (1088, 19738), (1112, 19312), (1136, 18904), (1207, 17792), (2176, 9869), (2224, 9656), (2272, 9452), (2363, 9088), (2414, 8896), (4448, 4828), (4544, 4726)]