28211580

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{73}}^1\times {\mathrm{113}}^1$

素因数の和:220

約数の個数: 144

約数和(自身を含む): 92121120

約数和(自身を除く): 63909540

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 19, 20, 30, 36, 38, 45, 57, 60, 73, 76, 90, 95, 113, 114, 146, 171, 180, 190, 219, 226, 228, 285, 292, 339, 342, 365, 380, 438, 452, 565, 570, 657, 678, 684, 730, 855, 876, 1017, 1095, 1130, 1140, 1314, 1356, 1387, 1460, 1695, 1710, 2034, 2147, 2190, 2260, 2628, 2774, 3285, 3390, 3420, 4068, 4161, 4294, 4380, 5085, 5548, 6441, 6570, 6780, 6935, 8249, 8322, 8588, 10170, 10735, 12483, 12882, 13140, 13870, 16498, 16644, 19323, 20340, 20805, 21470, 24747, 24966, 25764, 27740, 32205, 32996, 38646, 41245, 41610, 42940, 49494, 49932, 62415, 64410, 74241, 77292, 82490, 83220, 96615, 98988, 123735, 124830, 128820, 148482, 156731, 164980, 193230, 247470, 249660, 296964, 313462, 371205, 386460, 470193, 494940, 626924, 742410, 783655, 940386, 1410579, 1484820, 1567310, 1880772, 2350965, 2821158, 3134620, 4701930, 5642316, 7052895, 9403860, 14105790, 28211580]

約数ペア:

[(1, 28211580), (2, 14105790), (3, 9403860), (4, 7052895), (5, 5642316), (6, 4701930), (9, 3134620), (10, 2821158), (12, 2350965), (15, 1880772), (18, 1567310), (19, 1484820), (20, 1410579), (30, 940386), (36, 783655), (38, 742410), (45, 626924), (57, 494940), (60, 470193), (73, 386460), (76, 371205), (90, 313462), (95, 296964), (113, 249660), (114, 247470), (146, 193230), (171, 164980), (180, 156731), (190, 148482), (219, 128820), (226, 124830), (228, 123735), (285, 98988), (292, 96615), (339, 83220), (342, 82490), (365, 77292), (380, 74241), (438, 64410), (452, 62415), (565, 49932), (570, 49494), (657, 42940), (678, 41610), (684, 41245), (730, 38646), (855, 32996), (876, 32205), (1017, 27740), (1095, 25764), (1130, 24966), (1140, 24747), (1314, 21470), (1356, 20805), (1387, 20340), (1460, 19323), (1695, 16644), (1710, 16498), (2034, 13870), (2147, 13140), (2190, 12882), (2260, 12483), (2628, 10735), (2774, 10170), (3285, 8588), (3390, 8322), (3420, 8249), (4068, 6935), (4161, 6780), (4294, 6570), (4380, 6441), (5085, 5548)]