28285020

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{37}}^1\times {\mathrm{137}}^1$

素因数の和:220

約数の個数: 144

約数和(自身を含む): 91623168

約数和(自身を除く): 63338148

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 31, 36, 37, 45, 60, 62, 74, 90, 93, 111, 124, 137, 148, 155, 180, 185, 186, 222, 274, 279, 310, 333, 370, 372, 411, 444, 465, 548, 555, 558, 620, 666, 685, 740, 822, 930, 1110, 1116, 1147, 1233, 1332, 1370, 1395, 1644, 1665, 1860, 2055, 2220, 2294, 2466, 2740, 2790, 3330, 3441, 4110, 4247, 4588, 4932, 5069, 5580, 5735, 6165, 6660, 6882, 8220, 8494, 10138, 10323, 11470, 12330, 12741, 13764, 15207, 16988, 17205, 20276, 20646, 21235, 22940, 24660, 25345, 25482, 30414, 34410, 38223, 41292, 42470, 45621, 50690, 50964, 51615, 60828, 63705, 68820, 76035, 76446, 84940, 91242, 101380, 103230, 127410, 152070, 152892, 157139, 182484, 191115, 206460, 228105, 254820, 304140, 314278, 382230, 456210, 471417, 628556, 764460, 785695, 912420, 942834, 1414251, 1571390, 1885668, 2357085, 2828502, 3142780, 4714170, 5657004, 7071255, 9428340, 14142510, 28285020]

約数ペア:

[(1, 28285020), (2, 14142510), (3, 9428340), (4, 7071255), (5, 5657004), (6, 4714170), (9, 3142780), (10, 2828502), (12, 2357085), (15, 1885668), (18, 1571390), (20, 1414251), (30, 942834), (31, 912420), (36, 785695), (37, 764460), (45, 628556), (60, 471417), (62, 456210), (74, 382230), (90, 314278), (93, 304140), (111, 254820), (124, 228105), (137, 206460), (148, 191115), (155, 182484), (180, 157139), (185, 152892), (186, 152070), (222, 127410), (274, 103230), (279, 101380), (310, 91242), (333, 84940), (370, 76446), (372, 76035), (411, 68820), (444, 63705), (465, 60828), (548, 51615), (555, 50964), (558, 50690), (620, 45621), (666, 42470), (685, 41292), (740, 38223), (822, 34410), (930, 30414), (1110, 25482), (1116, 25345), (1147, 24660), (1233, 22940), (1332, 21235), (1370, 20646), (1395, 20276), (1644, 17205), (1665, 16988), (1860, 15207), (2055, 13764), (2220, 12741), (2294, 12330), (2466, 11470), (2740, 10323), (2790, 10138), (3330, 8494), (3441, 8220), (4110, 6882), (4247, 6660), (4588, 6165), (4932, 5735), (5069, 5580)]