21870216

素因数分解:

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

素因数の和:180

約数の個数: 96

約数和(自身を含む): 64836000

約数和(自身を除く): 42965784

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 18, 19, 24, 27, 36, 38, 54, 57, 72, 73, 76, 108, 114, 146, 152, 171, 216, 219, 228, 292, 342, 438, 456, 513, 584, 657, 684, 876, 1026, 1314, 1368, 1387, 1752, 1971, 2052, 2628, 2774, 3942, 4104, 4161, 5256, 5329, 5548, 7884, 8322, 10658, 11096, 12483, 15768, 15987, 16644, 21316, 24966, 31974, 33288, 37449, 42632, 47961, 49932, 63948, 74898, 95922, 99864, 101251, 127896, 143883, 149796, 191844, 202502, 287766, 299592, 303753, 383688, 405004, 575532, 607506, 810008, 911259, 1151064, 1215012, 1822518, 2430024, 2733777, 3645036, 5467554, 7290072, 10935108, 21870216]

約数ペア:

[(1, 21870216), (2, 10935108), (3, 7290072), (4, 5467554), (6, 3645036), (8, 2733777), (9, 2430024), (12, 1822518), (18, 1215012), (19, 1151064), (24, 911259), (27, 810008), (36, 607506), (38, 575532), (54, 405004), (57, 383688), (72, 303753), (73, 299592), (76, 287766), (108, 202502), (114, 191844), (146, 149796), (152, 143883), (171, 127896), (216, 101251), (219, 99864), (228, 95922), (292, 74898), (342, 63948), (438, 49932), (456, 47961), (513, 42632), (584, 37449), (657, 33288), (684, 31974), (876, 24966), (1026, 21316), (1314, 16644), (1368, 15987), (1387, 15768), (1752, 12483), (1971, 11096), (2052, 10658), (2628, 8322), (2774, 7884), (3942, 5548), (4104, 5329), (4161, 5256)]