20105040

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{4409}}^1$

素因数の和:4444

約数の個数: 80

約数和(自身を含む): 65620800

約数和(自身を除く): 45515760

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 19, 20, 24, 30, 38, 40, 48, 57, 60, 76, 80, 95, 114, 120, 152, 190, 228, 240, 285, 304, 380, 456, 570, 760, 912, 1140, 1520, 2280, 4409, 4560, 8818, 13227, 17636, 22045, 26454, 35272, 44090, 52908, 66135, 70544, 83771, 88180, 105816, 132270, 167542, 176360, 211632, 251313, 264540, 335084, 352720, 418855, 502626, 529080, 670168, 837710, 1005252, 1058160, 1256565, 1340336, 1675420, 2010504, 2513130, 3350840, 4021008, 5026260, 6701680, 10052520, 20105040]

約数ペア:

[(1, 20105040), (2, 10052520), (3, 6701680), (4, 5026260), (5, 4021008), (6, 3350840), (8, 2513130), (10, 2010504), (12, 1675420), (15, 1340336), (16, 1256565), (19, 1058160), (20, 1005252), (24, 837710), (30, 670168), (38, 529080), (40, 502626), (48, 418855), (57, 352720), (60, 335084), (76, 264540), (80, 251313), (95, 211632), (114, 176360), (120, 167542), (152, 132270), (190, 105816), (228, 88180), (240, 83771), (285, 70544), (304, 66135), (380, 52908), (456, 44090), (570, 35272), (760, 26454), (912, 22045), (1140, 17636), (1520, 13227), (2280, 8818), (4409, 4560)]