21010504

素因数分解:

$2^3\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{47}}^1\times {\mathrm{173}}^1$

素因数の和:262

約数の個数: 64

約数和(自身を含む): 45100800

約数和(自身を除く): 24090296

約数列:

[1, 2, 4, 8, 17, 19, 34, 38, 47, 68, 76, 94, 136, 152, 173, 188, 323, 346, 376, 646, 692, 799, 893, 1292, 1384, 1598, 1786, 2584, 2941, 3196, 3287, 3572, 5882, 6392, 6574, 7144, 8131, 11764, 13148, 15181, 16262, 23528, 26296, 30362, 32524, 55879, 60724, 65048, 111758, 121448, 138227, 154489, 223516, 276454, 308978, 447032, 552908, 617956, 1105816, 1235912, 2626313, 5252626, 10505252, 21010504]

約数ペア:

[(1, 21010504), (2, 10505252), (4, 5252626), (8, 2626313), (17, 1235912), (19, 1105816), (34, 617956), (38, 552908), (47, 447032), (68, 308978), (76, 276454), (94, 223516), (136, 154489), (152, 138227), (173, 121448), (188, 111758), (323, 65048), (346, 60724), (376, 55879), (646, 32524), (692, 30362), (799, 26296), (893, 23528), (1292, 16262), (1384, 15181), (1598, 13148), (1786, 11764), (2584, 8131), (2941, 7144), (3196, 6574), (3287, 6392), (3572, 5882)]