28544080

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{89}}^1\times {\mathrm{211}}^1$

素因数の和:332

約数の個数: 80

約数和(自身を含む): 70977600

約数和(自身を除く): 42433520

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 38, 40, 76, 80, 89, 95, 152, 178, 190, 211, 304, 356, 380, 422, 445, 712, 760, 844, 890, 1055, 1424, 1520, 1688, 1691, 1780, 2110, 3376, 3382, 3560, 4009, 4220, 6764, 7120, 8018, 8440, 8455, 13528, 16036, 16880, 16910, 18779, 20045, 27056, 32072, 33820, 37558, 40090, 64144, 67640, 75116, 80180, 93895, 135280, 150232, 160360, 187790, 300464, 320720, 356801, 375580, 713602, 751160, 1427204, 1502320, 1784005, 2854408, 3568010, 5708816, 7136020, 14272040, 28544080]

約数ペア:

[(1, 28544080), (2, 14272040), (4, 7136020), (5, 5708816), (8, 3568010), (10, 2854408), (16, 1784005), (19, 1502320), (20, 1427204), (38, 751160), (40, 713602), (76, 375580), (80, 356801), (89, 320720), (95, 300464), (152, 187790), (178, 160360), (190, 150232), (211, 135280), (304, 93895), (356, 80180), (380, 75116), (422, 67640), (445, 64144), (712, 40090), (760, 37558), (844, 33820), (890, 32072), (1055, 27056), (1424, 20045), (1520, 18779), (1688, 16910), (1691, 16880), (1780, 16036), (2110, 13528), (3376, 8455), (3382, 8440), (3560, 8018), (4009, 7120), (4220, 6764)]