21728916

素因数分解:

$2^2\times 3^2\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{1483}}^1$

素因数の和:1541

約数の個数: 72

約数和(自身を含む): 61580064

約数和(自身を除く): 39851148

約数列:

[1, 2, 3, 4, 6, 9, 11, 12, 18, 22, 33, 36, 37, 44, 66, 74, 99, 111, 132, 148, 198, 222, 333, 396, 407, 444, 666, 814, 1221, 1332, 1483, 1628, 2442, 2966, 3663, 4449, 4884, 5932, 7326, 8898, 13347, 14652, 16313, 17796, 26694, 32626, 48939, 53388, 54871, 65252, 97878, 109742, 146817, 164613, 195756, 219484, 293634, 329226, 493839, 587268, 603581, 658452, 987678, 1207162, 1810743, 1975356, 2414324, 3621486, 5432229, 7242972, 10864458, 21728916]

約数ペア:

[(1, 21728916), (2, 10864458), (3, 7242972), (4, 5432229), (6, 3621486), (9, 2414324), (11, 1975356), (12, 1810743), (18, 1207162), (22, 987678), (33, 658452), (36, 603581), (37, 587268), (44, 493839), (66, 329226), (74, 293634), (99, 219484), (111, 195756), (132, 164613), (148, 146817), (198, 109742), (222, 97878), (333, 65252), (396, 54871), (407, 53388), (444, 48939), (666, 32626), (814, 26694), (1221, 17796), (1332, 16313), (1483, 14652), (1628, 13347), (2442, 8898), (2966, 7326), (3663, 5932), (4449, 4884)]