19405980

素因数分解:

$2^2\times 3^6\times 5^1\times {\mathrm{11}}^3$

素因数の和:60

約数の個数: 168

約数和(自身を含む): 67206384

約数和(自身を除く): 47800404

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 11, 12, 15, 18, 20, 22, 27, 30, 33, 36, 44, 45, 54, 55, 60, 66, 81, 90, 99, 108, 110, 121, 132, 135, 162, 165, 180, 198, 220, 242, 243, 270, 297, 324, 330, 363, 396, 405, 484, 486, 495, 540, 594, 605, 660, 726, 729, 810, 891, 972, 990, 1089, 1188, 1210, 1215, 1331, 1452, 1458, 1485, 1620, 1782, 1815, 1980, 2178, 2420, 2430, 2662, 2673, 2916, 2970, 3267, 3564, 3630, 3645, 3993, 4356, 4455, 4860, 5324, 5346, 5445, 5940, 6534, 6655, 7260, 7290, 7986, 8019, 8910, 9801, 10692, 10890, 11979, 13068, 13310, 13365, 14580, 15972, 16038, 16335, 17820, 19602, 19965, 21780, 23958, 26620, 26730, 29403, 32076, 32670, 35937, 39204, 39930, 40095, 47916, 49005, 53460, 58806, 59895, 65340, 71874, 79860, 80190, 88209, 98010, 107811, 117612, 119790, 143748, 147015, 160380, 176418, 179685, 196020, 215622, 239580, 294030, 323433, 352836, 359370, 431244, 441045, 539055, 588060, 646866, 718740, 882090, 970299, 1078110, 1293732, 1617165, 1764180, 1940598, 2156220, 3234330, 3881196, 4851495, 6468660, 9702990, 19405980]

約数ペア:

[(1, 19405980), (2, 9702990), (3, 6468660), (4, 4851495), (5, 3881196), (6, 3234330), (9, 2156220), (10, 1940598), (11, 1764180), (12, 1617165), (15, 1293732), (18, 1078110), (20, 970299), (22, 882090), (27, 718740), (30, 646866), (33, 588060), (36, 539055), (44, 441045), (45, 431244), (54, 359370), (55, 352836), (60, 323433), (66, 294030), (81, 239580), (90, 215622), (99, 196020), (108, 179685), (110, 176418), (121, 160380), (132, 147015), (135, 143748), (162, 119790), (165, 117612), (180, 107811), (198, 98010), (220, 88209), (242, 80190), (243, 79860), (270, 71874), (297, 65340), (324, 59895), (330, 58806), (363, 53460), (396, 49005), (405, 47916), (484, 40095), (486, 39930), (495, 39204), (540, 35937), (594, 32670), (605, 32076), (660, 29403), (726, 26730), (729, 26620), (810, 23958), (891, 21780), (972, 19965), (990, 19602), (1089, 17820), (1188, 16335), (1210, 16038), (1215, 15972), (1331, 14580), (1452, 13365), (1458, 13310), (1485, 13068), (1620, 11979), (1782, 10890), (1815, 10692), (1980, 9801), (2178, 8910), (2420, 8019), (2430, 7986), (2662, 7290), (2673, 7260), (2916, 6655), (2970, 6534), (3267, 5940), (3564, 5445), (3630, 5346), (3645, 5324), (3993, 4860), (4356, 4455)]