21120780

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{97}}^1\times {\mathrm{191}}^1$

素因数の和:319

約数の個数: 96

約数和(自身を含む): 63221760

約数和(自身を除く): 42100980

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 19, 20, 30, 38, 57, 60, 76, 95, 97, 114, 190, 191, 194, 228, 285, 291, 380, 382, 388, 485, 570, 573, 582, 764, 955, 970, 1140, 1146, 1164, 1455, 1843, 1910, 1940, 2292, 2865, 2910, 3629, 3686, 3820, 5529, 5730, 5820, 7258, 7372, 9215, 10887, 11058, 11460, 14516, 18145, 18430, 18527, 21774, 22116, 27645, 36290, 36860, 37054, 43548, 54435, 55290, 55581, 72580, 74108, 92635, 108870, 110580, 111162, 185270, 217740, 222324, 277905, 352013, 370540, 555810, 704026, 1056039, 1111620, 1408052, 1760065, 2112078, 3520130, 4224156, 5280195, 7040260, 10560390, 21120780]

約数ペア:

[(1, 21120780), (2, 10560390), (3, 7040260), (4, 5280195), (5, 4224156), (6, 3520130), (10, 2112078), (12, 1760065), (15, 1408052), (19, 1111620), (20, 1056039), (30, 704026), (38, 555810), (57, 370540), (60, 352013), (76, 277905), (95, 222324), (97, 217740), (114, 185270), (190, 111162), (191, 110580), (194, 108870), (228, 92635), (285, 74108), (291, 72580), (380, 55581), (382, 55290), (388, 54435), (485, 43548), (570, 37054), (573, 36860), (582, 36290), (764, 27645), (955, 22116), (970, 21774), (1140, 18527), (1146, 18430), (1164, 18145), (1455, 14516), (1843, 11460), (1910, 11058), (1940, 10887), (2292, 9215), (2865, 7372), (2910, 7258), (3629, 5820), (3686, 5730), (3820, 5529)]