291222316

素因数分解:

$2^2\times 7^1\times {\mathrm{11}}^2\times {\mathrm{43}}^1\times {\mathrm{1999}}^1$

素因数の和:2075

約数の個数: 72

約数和(自身を含む): 655424000

約数和(自身を除く): 364201684

約数列:

[1, 2, 4, 7, 11, 14, 22, 28, 43, 44, 77, 86, 121, 154, 172, 242, 301, 308, 473, 484, 602, 847, 946, 1204, 1694, 1892, 1999, 3311, 3388, 3998, 5203, 6622, 7996, 10406, 13244, 13993, 20812, 21989, 27986, 36421, 43978, 55972, 72842, 85957, 87956, 145684, 153923, 171914, 241879, 307846, 343828, 483758, 601699, 615692, 945527, 967516, 1203398, 1693153, 1891054, 2406796, 3386306, 3782108, 6618689, 6772612, 10400797, 13237378, 20801594, 26474756, 41603188, 72805579, 145611158, 291222316]

約数ペア:

[(1, 291222316), (2, 145611158), (4, 72805579), (7, 41603188), (11, 26474756), (14, 20801594), (22, 13237378), (28, 10400797), (43, 6772612), (44, 6618689), (77, 3782108), (86, 3386306), (121, 2406796), (154, 1891054), (172, 1693153), (242, 1203398), (301, 967516), (308, 945527), (473, 615692), (484, 601699), (602, 483758), (847, 343828), (946, 307846), (1204, 241879), (1694, 171914), (1892, 153923), (1999, 145684), (3311, 87956), (3388, 85957), (3998, 72842), (5203, 55972), (6622, 43978), (7996, 36421), (10406, 27986), (13244, 21989), (13993, 20812)]