21718900

素因数分解:

$2^2\times 5^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{71}}^1$

素因数の和:134

約数の個数: 144

約数和(自身を含む): 59996160

約数和(自身を除く): 38277260

約数列:

[1, 2, 4, 5, 7, 10, 14, 19, 20, 23, 25, 28, 35, 38, 46, 50, 70, 71, 76, 92, 95, 100, 115, 133, 140, 142, 161, 175, 190, 230, 266, 284, 322, 350, 355, 380, 437, 460, 475, 497, 532, 575, 644, 665, 700, 710, 805, 874, 950, 994, 1150, 1330, 1349, 1420, 1610, 1633, 1748, 1775, 1900, 1988, 2185, 2300, 2485, 2660, 2698, 3059, 3220, 3266, 3325, 3550, 4025, 4370, 4970, 5396, 6118, 6532, 6650, 6745, 7100, 8050, 8165, 8740, 9443, 9940, 10925, 11431, 12236, 12425, 13300, 13490, 15295, 16100, 16330, 18886, 21850, 22862, 24850, 26980, 30590, 31027, 32660, 33725, 37772, 40825, 43700, 45724, 47215, 49700, 57155, 61180, 62054, 67450, 76475, 81650, 94430, 114310, 124108, 134900, 152950, 155135, 163300, 188860, 217189, 228620, 236075, 285775, 305900, 310270, 434378, 472150, 571550, 620540, 775675, 868756, 944300, 1085945, 1143100, 1551350, 2171890, 3102700, 4343780, 5429725, 10859450, 21718900]

約数ペア:

[(1, 21718900), (2, 10859450), (4, 5429725), (5, 4343780), (7, 3102700), (10, 2171890), (14, 1551350), (19, 1143100), (20, 1085945), (23, 944300), (25, 868756), (28, 775675), (35, 620540), (38, 571550), (46, 472150), (50, 434378), (70, 310270), (71, 305900), (76, 285775), (92, 236075), (95, 228620), (100, 217189), (115, 188860), (133, 163300), (140, 155135), (142, 152950), (161, 134900), (175, 124108), (190, 114310), (230, 94430), (266, 81650), (284, 76475), (322, 67450), (350, 62054), (355, 61180), (380, 57155), (437, 49700), (460, 47215), (475, 45724), (497, 43700), (532, 40825), (575, 37772), (644, 33725), (665, 32660), (700, 31027), (710, 30590), (805, 26980), (874, 24850), (950, 22862), (994, 21850), (1150, 18886), (1330, 16330), (1349, 16100), (1420, 15295), (1610, 13490), (1633, 13300), (1748, 12425), (1775, 12236), (1900, 11431), (1988, 10925), (2185, 9940), (2300, 9443), (2485, 8740), (2660, 8165), (2698, 8050), (3059, 7100), (3220, 6745), (3266, 6650), (3325, 6532), (3550, 6118), (4025, 5396), (4370, 4970)]