18715844

素因数分解:

$2^2\times 7^2\times {\mathrm{17}}^1\times {\mathrm{41}}^1\times {\mathrm{137}}^1$

素因数の和:213

約数の個数: 72

約数和(自身を含む): 41626872

約数和(自身を除く): 22911028

約数列:

[1, 2, 4, 7, 14, 17, 28, 34, 41, 49, 68, 82, 98, 119, 137, 164, 196, 238, 274, 287, 476, 548, 574, 697, 833, 959, 1148, 1394, 1666, 1918, 2009, 2329, 2788, 3332, 3836, 4018, 4658, 4879, 5617, 6713, 8036, 9316, 9758, 11234, 13426, 16303, 19516, 22468, 26852, 32606, 34153, 39319, 65212, 68306, 78638, 95489, 114121, 136612, 157276, 190978, 228242, 275233, 381956, 456484, 550466, 668423, 1100932, 1336846, 2673692, 4678961, 9357922, 18715844]

約数ペア:

[(1, 18715844), (2, 9357922), (4, 4678961), (7, 2673692), (14, 1336846), (17, 1100932), (28, 668423), (34, 550466), (41, 456484), (49, 381956), (68, 275233), (82, 228242), (98, 190978), (119, 157276), (137, 136612), (164, 114121), (196, 95489), (238, 78638), (274, 68306), (287, 65212), (476, 39319), (548, 34153), (574, 32606), (697, 26852), (833, 22468), (959, 19516), (1148, 16303), (1394, 13426), (1666, 11234), (1918, 9758), (2009, 9316), (2329, 8036), (2788, 6713), (3332, 5617), (3836, 4879), (4018, 4658)]