19919988

素因数分解:

$2^2\times 3^2\times {\mathrm{11}}^2\times {\mathrm{17}}^1\times {\mathrm{269}}^1$

素因数の和:318

約数の個数: 108

約数和(自身を含む): 58820580

約数和(自身を除く): 38900592

約数列:

[1, 2, 3, 4, 6, 9, 11, 12, 17, 18, 22, 33, 34, 36, 44, 51, 66, 68, 99, 102, 121, 132, 153, 187, 198, 204, 242, 269, 306, 363, 374, 396, 484, 538, 561, 612, 726, 748, 807, 1076, 1089, 1122, 1452, 1614, 1683, 2057, 2178, 2244, 2421, 2959, 3228, 3366, 4114, 4356, 4573, 4842, 5918, 6171, 6732, 8228, 8877, 9146, 9684, 11836, 12342, 13719, 17754, 18292, 18513, 24684, 26631, 27438, 32549, 35508, 37026, 41157, 50303, 53262, 54876, 65098, 74052, 82314, 97647, 100606, 106524, 130196, 150909, 164628, 195294, 201212, 292941, 301818, 390588, 452727, 553333, 585882, 603636, 905454, 1106666, 1171764, 1659999, 1810908, 2213332, 3319998, 4979997, 6639996, 9959994, 19919988]

約数ペア:

[(1, 19919988), (2, 9959994), (3, 6639996), (4, 4979997), (6, 3319998), (9, 2213332), (11, 1810908), (12, 1659999), (17, 1171764), (18, 1106666), (22, 905454), (33, 603636), (34, 585882), (36, 553333), (44, 452727), (51, 390588), (66, 301818), (68, 292941), (99, 201212), (102, 195294), (121, 164628), (132, 150909), (153, 130196), (187, 106524), (198, 100606), (204, 97647), (242, 82314), (269, 74052), (306, 65098), (363, 54876), (374, 53262), (396, 50303), (484, 41157), (538, 37026), (561, 35508), (612, 32549), (726, 27438), (748, 26631), (807, 24684), (1076, 18513), (1089, 18292), (1122, 17754), (1452, 13719), (1614, 12342), (1683, 11836), (2057, 9684), (2178, 9146), (2244, 8877), (2421, 8228), (2959, 6732), (3228, 6171), (3366, 5918), (4114, 4842), (4356, 4573)]