18964384

素因数分解:

$2^5\times {\mathrm{17}}^1\times {\mathrm{71}}^1\times {\mathrm{491}}^1$

素因数の和:589

約数の個数: 48

約数和(自身を含む): 40170816

約数和(自身を除く): 21206432

約数列:

[1, 2, 4, 8, 16, 17, 32, 34, 68, 71, 136, 142, 272, 284, 491, 544, 568, 982, 1136, 1207, 1964, 2272, 2414, 3928, 4828, 7856, 8347, 9656, 15712, 16694, 19312, 33388, 34861, 38624, 66776, 69722, 133552, 139444, 267104, 278888, 557776, 592637, 1115552, 1185274, 2370548, 4741096, 9482192, 18964384]

約数ペア:

[(1, 18964384), (2, 9482192), (4, 4741096), (8, 2370548), (16, 1185274), (17, 1115552), (32, 592637), (34, 557776), (68, 278888), (71, 267104), (136, 139444), (142, 133552), (272, 69722), (284, 66776), (491, 38624), (544, 34861), (568, 33388), (982, 19312), (1136, 16694), (1207, 15712), (1964, 9656), (2272, 8347), (2414, 7856), (3928, 4828)]