19800180

素因数分解:

$2^2\times 3^3\times 5^1\times {\mathrm{37}}^1\times {\mathrm{991}}^1$

素因数の和:1046

約数の個数: 96

約数和(自身を含む): 63329280

約数和(自身を除く): 43529100

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 27, 30, 36, 37, 45, 54, 60, 74, 90, 108, 111, 135, 148, 180, 185, 222, 270, 333, 370, 444, 540, 555, 666, 740, 991, 999, 1110, 1332, 1665, 1982, 1998, 2220, 2973, 3330, 3964, 3996, 4955, 4995, 5946, 6660, 8919, 9910, 9990, 11892, 14865, 17838, 19820, 19980, 26757, 29730, 35676, 36667, 44595, 53514, 59460, 73334, 89190, 107028, 110001, 133785, 146668, 178380, 183335, 220002, 267570, 330003, 366670, 440004, 535140, 550005, 660006, 733340, 990009, 1100010, 1320012, 1650015, 1980018, 2200020, 3300030, 3960036, 4950045, 6600060, 9900090, 19800180]

約数ペア:

[(1, 19800180), (2, 9900090), (3, 6600060), (4, 4950045), (5, 3960036), (6, 3300030), (9, 2200020), (10, 1980018), (12, 1650015), (15, 1320012), (18, 1100010), (20, 990009), (27, 733340), (30, 660006), (36, 550005), (37, 535140), (45, 440004), (54, 366670), (60, 330003), (74, 267570), (90, 220002), (108, 183335), (111, 178380), (135, 146668), (148, 133785), (180, 110001), (185, 107028), (222, 89190), (270, 73334), (333, 59460), (370, 53514), (444, 44595), (540, 36667), (555, 35676), (666, 29730), (740, 26757), (991, 19980), (999, 19820), (1110, 17838), (1332, 14865), (1665, 11892), (1982, 9990), (1998, 9910), (2220, 8919), (2973, 6660), (3330, 5946), (3964, 4995), (3996, 4955)]