19717280

素因数分解:

$2^5\times 5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{659}}^1$

素因数の和:702

約数の個数: 96

約数和(自身を含む): 53887680

約数和(自身を除く): 34170400

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 17, 20, 22, 32, 34, 40, 44, 55, 68, 80, 85, 88, 110, 136, 160, 170, 176, 187, 220, 272, 340, 352, 374, 440, 544, 659, 680, 748, 880, 935, 1318, 1360, 1496, 1760, 1870, 2636, 2720, 2992, 3295, 3740, 5272, 5984, 6590, 7249, 7480, 10544, 11203, 13180, 14498, 14960, 21088, 22406, 26360, 28996, 29920, 36245, 44812, 52720, 56015, 57992, 72490, 89624, 105440, 112030, 115984, 123233, 144980, 179248, 224060, 231968, 246466, 289960, 358496, 448120, 492932, 579920, 616165, 896240, 985864, 1159840, 1232330, 1792480, 1971728, 2464660, 3943456, 4929320, 9858640, 19717280]

約数ペア:

[(1, 19717280), (2, 9858640), (4, 4929320), (5, 3943456), (8, 2464660), (10, 1971728), (11, 1792480), (16, 1232330), (17, 1159840), (20, 985864), (22, 896240), (32, 616165), (34, 579920), (40, 492932), (44, 448120), (55, 358496), (68, 289960), (80, 246466), (85, 231968), (88, 224060), (110, 179248), (136, 144980), (160, 123233), (170, 115984), (176, 112030), (187, 105440), (220, 89624), (272, 72490), (340, 57992), (352, 56015), (374, 52720), (440, 44812), (544, 36245), (659, 29920), (680, 28996), (748, 26360), (880, 22406), (935, 21088), (1318, 14960), (1360, 14498), (1496, 13180), (1760, 11203), (1870, 10544), (2636, 7480), (2720, 7249), (2992, 6590), (3295, 5984), (3740, 5272)]