21730275

素因数分解:

$3^5\times 5^2\times 7^2\times {\mathrm{73}}^1$

素因数の和:112

約数の個数: 108

約数和(自身を含む): 47595912

約数和(自身を除く): 25865637

約数列:

[1, 3, 5, 7, 9, 15, 21, 25, 27, 35, 45, 49, 63, 73, 75, 81, 105, 135, 147, 175, 189, 219, 225, 243, 245, 315, 365, 405, 441, 511, 525, 567, 657, 675, 735, 945, 1095, 1215, 1225, 1323, 1533, 1575, 1701, 1825, 1971, 2025, 2205, 2555, 2835, 3285, 3577, 3675, 3969, 4599, 4725, 5475, 5913, 6075, 6615, 7665, 8505, 9855, 10731, 11025, 11907, 12775, 13797, 14175, 16425, 17739, 17885, 19845, 22995, 29565, 32193, 33075, 38325, 41391, 42525, 49275, 53655, 59535, 68985, 88695, 89425, 96579, 99225, 114975, 124173, 147825, 160965, 206955, 268275, 289737, 297675, 344925, 443475, 482895, 620865, 804825, 869211, 1034775, 1448685, 2414475, 3104325, 4346055, 7243425, 21730275]

約数ペア:

[(1, 21730275), (3, 7243425), (5, 4346055), (7, 3104325), (9, 2414475), (15, 1448685), (21, 1034775), (25, 869211), (27, 804825), (35, 620865), (45, 482895), (49, 443475), (63, 344925), (73, 297675), (75, 289737), (81, 268275), (105, 206955), (135, 160965), (147, 147825), (175, 124173), (189, 114975), (219, 99225), (225, 96579), (243, 89425), (245, 88695), (315, 68985), (365, 59535), (405, 53655), (441, 49275), (511, 42525), (525, 41391), (567, 38325), (657, 33075), (675, 32193), (735, 29565), (945, 22995), (1095, 19845), (1215, 17885), (1225, 17739), (1323, 16425), (1533, 14175), (1575, 13797), (1701, 12775), (1825, 11907), (1971, 11025), (2025, 10731), (2205, 9855), (2555, 8505), (2835, 7665), (3285, 6615), (3577, 6075), (3675, 5913), (3969, 5475), (4599, 4725)]