18916020

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{5531}}^1$

素因数の和:5565

約数の個数: 72

約数和(自身を含む): 60409440

約数和(自身を除く): 41493420

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 19, 20, 30, 36, 38, 45, 57, 60, 76, 90, 95, 114, 171, 180, 190, 228, 285, 342, 380, 570, 684, 855, 1140, 1710, 3420, 5531, 11062, 16593, 22124, 27655, 33186, 49779, 55310, 66372, 82965, 99558, 105089, 110620, 165930, 199116, 210178, 248895, 315267, 331860, 420356, 497790, 525445, 630534, 945801, 995580, 1050890, 1261068, 1576335, 1891602, 2101780, 3152670, 3783204, 4729005, 6305340, 9458010, 18916020]

約数ペア:

[(1, 18916020), (2, 9458010), (3, 6305340), (4, 4729005), (5, 3783204), (6, 3152670), (9, 2101780), (10, 1891602), (12, 1576335), (15, 1261068), (18, 1050890), (19, 995580), (20, 945801), (30, 630534), (36, 525445), (38, 497790), (45, 420356), (57, 331860), (60, 315267), (76, 248895), (90, 210178), (95, 199116), (114, 165930), (171, 110620), (180, 105089), (190, 99558), (228, 82965), (285, 66372), (342, 55310), (380, 49779), (570, 33186), (684, 27655), (855, 22124), (1140, 16593), (1710, 11062), (3420, 5531)]