19983080

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{83}}^1\times {\mathrm{463}}^1$

素因数の和:570

約数の個数: 64

約数和(自身を含む): 49109760

約数和(自身を除く): 29126680

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 83, 104, 130, 166, 260, 332, 415, 463, 520, 664, 830, 926, 1079, 1660, 1852, 2158, 2315, 3320, 3704, 4316, 4630, 5395, 6019, 8632, 9260, 10790, 12038, 18520, 21580, 24076, 30095, 38429, 43160, 48152, 60190, 76858, 120380, 153716, 192145, 240760, 307432, 384290, 499577, 768580, 999154, 1537160, 1998308, 2497885, 3996616, 4995770, 9991540, 19983080]

約数ペア:

[(1, 19983080), (2, 9991540), (4, 4995770), (5, 3996616), (8, 2497885), (10, 1998308), (13, 1537160), (20, 999154), (26, 768580), (40, 499577), (52, 384290), (65, 307432), (83, 240760), (104, 192145), (130, 153716), (166, 120380), (260, 76858), (332, 60190), (415, 48152), (463, 43160), (520, 38429), (664, 30095), (830, 24076), (926, 21580), (1079, 18520), (1660, 12038), (1852, 10790), (2158, 9260), (2315, 8632), (3320, 6019), (3704, 5395), (4316, 4630)]