20998800

素因数分解:

$2^4\times 3^2\times 5^2\times {\mathrm{19}}^1\times {\mathrm{307}}^1$

素因数の和:350

約数の個数: 180

約数和(自身を含む): 76956880

約数和(自身を除く): 55958080

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 19, 20, 24, 25, 30, 36, 38, 40, 45, 48, 50, 57, 60, 72, 75, 76, 80, 90, 95, 100, 114, 120, 144, 150, 152, 171, 180, 190, 200, 225, 228, 240, 285, 300, 304, 307, 342, 360, 380, 400, 450, 456, 475, 570, 600, 614, 684, 720, 760, 855, 900, 912, 921, 950, 1140, 1200, 1228, 1368, 1425, 1520, 1535, 1710, 1800, 1842, 1900, 2280, 2456, 2736, 2763, 2850, 3070, 3420, 3600, 3684, 3800, 4275, 4560, 4605, 4912, 5526, 5700, 5833, 6140, 6840, 7368, 7600, 7675, 8550, 9210, 11052, 11400, 11666, 12280, 13680, 13815, 14736, 15350, 17100, 17499, 18420, 22104, 22800, 23025, 23332, 24560, 27630, 29165, 30700, 34200, 34998, 36840, 44208, 46050, 46664, 52497, 55260, 58330, 61400, 68400, 69075, 69996, 73680, 87495, 92100, 93328, 104994, 110520, 116660, 122800, 138150, 139992, 145825, 174990, 184200, 209988, 221040, 233320, 262485, 276300, 279984, 291650, 349980, 368400, 419976, 437475, 466640, 524970, 552600, 583300, 699960, 839952, 874950, 1049940, 1105200, 1166600, 1312425, 1399920, 1749900, 2099880, 2333200, 2624850, 3499800, 4199760, 5249700, 6999600, 10499400, 20998800]

約数ペア:

[(1, 20998800), (2, 10499400), (3, 6999600), (4, 5249700), (5, 4199760), (6, 3499800), (8, 2624850), (9, 2333200), (10, 2099880), (12, 1749900), (15, 1399920), (16, 1312425), (18, 1166600), (19, 1105200), (20, 1049940), (24, 874950), (25, 839952), (30, 699960), (36, 583300), (38, 552600), (40, 524970), (45, 466640), (48, 437475), (50, 419976), (57, 368400), (60, 349980), (72, 291650), (75, 279984), (76, 276300), (80, 262485), (90, 233320), (95, 221040), (100, 209988), (114, 184200), (120, 174990), (144, 145825), (150, 139992), (152, 138150), (171, 122800), (180, 116660), (190, 110520), (200, 104994), (225, 93328), (228, 92100), (240, 87495), (285, 73680), (300, 69996), (304, 69075), (307, 68400), (342, 61400), (360, 58330), (380, 55260), (400, 52497), (450, 46664), (456, 46050), (475, 44208), (570, 36840), (600, 34998), (614, 34200), (684, 30700), (720, 29165), (760, 27630), (855, 24560), (900, 23332), (912, 23025), (921, 22800), (950, 22104), (1140, 18420), (1200, 17499), (1228, 17100), (1368, 15350), (1425, 14736), (1520, 13815), (1535, 13680), (1710, 12280), (1800, 11666), (1842, 11400), (1900, 11052), (2280, 9210), (2456, 8550), (2736, 7675), (2763, 7600), (2850, 7368), (3070, 6840), (3420, 6140), (3600, 5833), (3684, 5700), (3800, 5526), (4275, 4912), (4560, 4605)]