28259460

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{8263}}^1$

素因数の和:8297

約数の個数: 72

約数和(自身を含む): 90242880

約数和(自身を除く): 61983420

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 19, 20, 30, 36, 38, 45, 57, 60, 76, 90, 95, 114, 171, 180, 190, 228, 285, 342, 380, 570, 684, 855, 1140, 1710, 3420, 8263, 16526, 24789, 33052, 41315, 49578, 74367, 82630, 99156, 123945, 148734, 156997, 165260, 247890, 297468, 313994, 371835, 470991, 495780, 627988, 743670, 784985, 941982, 1412973, 1487340, 1569970, 1883964, 2354955, 2825946, 3139940, 4709910, 5651892, 7064865, 9419820, 14129730, 28259460]

約数ペア:

[(1, 28259460), (2, 14129730), (3, 9419820), (4, 7064865), (5, 5651892), (6, 4709910), (9, 3139940), (10, 2825946), (12, 2354955), (15, 1883964), (18, 1569970), (19, 1487340), (20, 1412973), (30, 941982), (36, 784985), (38, 743670), (45, 627988), (57, 495780), (60, 470991), (76, 371835), (90, 313994), (95, 297468), (114, 247890), (171, 165260), (180, 156997), (190, 148734), (228, 123945), (285, 99156), (342, 82630), (380, 74367), (570, 49578), (684, 41315), (855, 33052), (1140, 24789), (1710, 16526), (3420, 8263)]