84878320

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^2\times {\mathrm{2939}}^1$

素因数の和:2990

約数の個数: 60

約数和(自身を含む): 208346040

約数和(自身を除く): 123467720

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 38, 40, 76, 80, 95, 152, 190, 304, 361, 380, 722, 760, 1444, 1520, 1805, 2888, 2939, 3610, 5776, 5878, 7220, 11756, 14440, 14695, 23512, 28880, 29390, 47024, 55841, 58780, 111682, 117560, 223364, 235120, 279205, 446728, 558410, 893456, 1060979, 1116820, 2121958, 2233640, 4243916, 4467280, 5304895, 8487832, 10609790, 16975664, 21219580, 42439160, 84878320]

約数ペア:

[(1, 84878320), (2, 42439160), (4, 21219580), (5, 16975664), (8, 10609790), (10, 8487832), (16, 5304895), (19, 4467280), (20, 4243916), (38, 2233640), (40, 2121958), (76, 1116820), (80, 1060979), (95, 893456), (152, 558410), (190, 446728), (304, 279205), (361, 235120), (380, 223364), (722, 117560), (760, 111682), (1444, 58780), (1520, 55841), (1805, 47024), (2888, 29390), (2939, 28880), (3610, 23512), (5776, 14695), (5878, 14440), (7220, 11756)]