19973200

素因数分解:

$2^4\times 5^2\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{167}}^1$

素因数の和:221

約数の個数: 120

約数和(自身を含む): 54246528

約数和(自身を除く): 34273328

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 23, 25, 26, 40, 46, 50, 52, 65, 80, 92, 100, 104, 115, 130, 167, 184, 200, 208, 230, 260, 299, 325, 334, 368, 400, 460, 520, 575, 598, 650, 668, 835, 920, 1040, 1150, 1196, 1300, 1336, 1495, 1670, 1840, 2171, 2300, 2392, 2600, 2672, 2990, 3340, 3841, 4175, 4342, 4600, 4784, 5200, 5980, 6680, 7475, 7682, 8350, 8684, 9200, 10855, 11960, 13360, 14950, 15364, 16700, 17368, 19205, 21710, 23920, 29900, 30728, 33400, 34736, 38410, 43420, 49933, 54275, 59800, 61456, 66800, 76820, 86840, 96025, 99866, 108550, 119600, 153640, 173680, 192050, 199732, 217100, 249665, 307280, 384100, 399464, 434200, 499330, 768200, 798928, 868400, 998660, 1248325, 1536400, 1997320, 2496650, 3994640, 4993300, 9986600, 19973200]

約数ペア:

[(1, 19973200), (2, 9986600), (4, 4993300), (5, 3994640), (8, 2496650), (10, 1997320), (13, 1536400), (16, 1248325), (20, 998660), (23, 868400), (25, 798928), (26, 768200), (40, 499330), (46, 434200), (50, 399464), (52, 384100), (65, 307280), (80, 249665), (92, 217100), (100, 199732), (104, 192050), (115, 173680), (130, 153640), (167, 119600), (184, 108550), (200, 99866), (208, 96025), (230, 86840), (260, 76820), (299, 66800), (325, 61456), (334, 59800), (368, 54275), (400, 49933), (460, 43420), (520, 38410), (575, 34736), (598, 33400), (650, 30728), (668, 29900), (835, 23920), (920, 21710), (1040, 19205), (1150, 17368), (1196, 16700), (1300, 15364), (1336, 14950), (1495, 13360), (1670, 11960), (1840, 10855), (2171, 9200), (2300, 8684), (2392, 8350), (2600, 7682), (2672, 7475), (2990, 6680), (3340, 5980), (3841, 5200), (4175, 4784), (4342, 4600)]