28979580

素因数分解:

$2^2\times 3^1\times 5^1\times 7^2\times {\mathrm{9857}}^1$

素因数の和:9883

約数の個数: 72

約数和(自身を含む): 94400208

約数和(自身を除く): 65420628

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 49, 60, 70, 84, 98, 105, 140, 147, 196, 210, 245, 294, 420, 490, 588, 735, 980, 1470, 2940, 9857, 19714, 29571, 39428, 49285, 59142, 68999, 98570, 118284, 137998, 147855, 197140, 206997, 275996, 295710, 344995, 413994, 482993, 591420, 689990, 827988, 965986, 1034985, 1379980, 1448979, 1931972, 2069970, 2414965, 2897958, 4139940, 4829930, 5795916, 7244895, 9659860, 14489790, 28979580]

約数ペア:

[(1, 28979580), (2, 14489790), (3, 9659860), (4, 7244895), (5, 5795916), (6, 4829930), (7, 4139940), (10, 2897958), (12, 2414965), (14, 2069970), (15, 1931972), (20, 1448979), (21, 1379980), (28, 1034985), (30, 965986), (35, 827988), (42, 689990), (49, 591420), (60, 482993), (70, 413994), (84, 344995), (98, 295710), (105, 275996), (140, 206997), (147, 197140), (196, 147855), (210, 137998), (245, 118284), (294, 98570), (420, 68999), (490, 59142), (588, 49285), (735, 39428), (980, 29571), (1470, 19714), (2940, 9857)]