15988880

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{67}}^1\times {\mathrm{157}}^1$

素因数の和:256

約数の個数: 80

約数和(自身を含む): 39967680

約数和(自身を除く): 23978800

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 38, 40, 67, 76, 80, 95, 134, 152, 157, 190, 268, 304, 314, 335, 380, 536, 628, 670, 760, 785, 1072, 1256, 1273, 1340, 1520, 1570, 2512, 2546, 2680, 2983, 3140, 5092, 5360, 5966, 6280, 6365, 10184, 10519, 11932, 12560, 12730, 14915, 20368, 21038, 23864, 25460, 29830, 42076, 47728, 50920, 52595, 59660, 84152, 101840, 105190, 119320, 168304, 199861, 210380, 238640, 399722, 420760, 799444, 841520, 999305, 1598888, 1998610, 3197776, 3997220, 7994440, 15988880]

約数ペア:

[(1, 15988880), (2, 7994440), (4, 3997220), (5, 3197776), (8, 1998610), (10, 1598888), (16, 999305), (19, 841520), (20, 799444), (38, 420760), (40, 399722), (67, 238640), (76, 210380), (80, 199861), (95, 168304), (134, 119320), (152, 105190), (157, 101840), (190, 84152), (268, 59660), (304, 52595), (314, 50920), (335, 47728), (380, 42076), (536, 29830), (628, 25460), (670, 23864), (760, 21038), (785, 20368), (1072, 14915), (1256, 12730), (1273, 12560), (1340, 11932), (1520, 10519), (1570, 10184), (2512, 6365), (2546, 6280), (2680, 5966), (2983, 5360), (3140, 5092)]