18855120

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{251}}^1\times {\mathrm{313}}^1$

素因数の和:580

約数の個数: 80

約数和(自身を含む): 58871232

約数和(自身を除く): 40016112

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 48, 60, 80, 120, 240, 251, 313, 502, 626, 753, 939, 1004, 1252, 1255, 1506, 1565, 1878, 2008, 2504, 2510, 3012, 3130, 3756, 3765, 4016, 4695, 5008, 5020, 6024, 6260, 7512, 7530, 9390, 10040, 12048, 12520, 15024, 15060, 18780, 20080, 25040, 30120, 37560, 60240, 75120, 78563, 157126, 235689, 314252, 392815, 471378, 628504, 785630, 942756, 1178445, 1257008, 1571260, 1885512, 2356890, 3142520, 3771024, 4713780, 6285040, 9427560, 18855120]

約数ペア:

[(1, 18855120), (2, 9427560), (3, 6285040), (4, 4713780), (5, 3771024), (6, 3142520), (8, 2356890), (10, 1885512), (12, 1571260), (15, 1257008), (16, 1178445), (20, 942756), (24, 785630), (30, 628504), (40, 471378), (48, 392815), (60, 314252), (80, 235689), (120, 157126), (240, 78563), (251, 75120), (313, 60240), (502, 37560), (626, 30120), (753, 25040), (939, 20080), (1004, 18780), (1252, 15060), (1255, 15024), (1506, 12520), (1565, 12048), (1878, 10040), (2008, 9390), (2504, 7530), (2510, 7512), (3012, 6260), (3130, 6024), (3756, 5020), (3765, 5008), (4016, 4695)]