19975800

素因数分解:

$2^3\times 3^1\times 5^2\times {\mathrm{13}}^2\times {\mathrm{197}}^1$

素因数の和:242

約数の個数: 144

約数和(自身を含む): 67395240

約数和(自身を除く): 47419440

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 20, 24, 25, 26, 30, 39, 40, 50, 52, 60, 65, 75, 78, 100, 104, 120, 130, 150, 156, 169, 195, 197, 200, 260, 300, 312, 325, 338, 390, 394, 507, 520, 591, 600, 650, 676, 780, 788, 845, 975, 985, 1014, 1182, 1300, 1352, 1560, 1576, 1690, 1950, 1970, 2028, 2364, 2535, 2561, 2600, 2955, 3380, 3900, 3940, 4056, 4225, 4728, 4925, 5070, 5122, 5910, 6760, 7683, 7800, 7880, 8450, 9850, 10140, 10244, 11820, 12675, 12805, 14775, 15366, 16900, 19700, 20280, 20488, 23640, 25350, 25610, 29550, 30732, 33293, 33800, 38415, 39400, 50700, 51220, 59100, 61464, 64025, 66586, 76830, 99879, 101400, 102440, 118200, 128050, 133172, 153660, 166465, 192075, 199758, 256100, 266344, 307320, 332930, 384150, 399516, 499395, 512200, 665860, 768300, 799032, 832325, 998790, 1331720, 1536600, 1664650, 1997580, 2496975, 3329300, 3995160, 4993950, 6658600, 9987900, 19975800]

約数ペア:

[(1, 19975800), (2, 9987900), (3, 6658600), (4, 4993950), (5, 3995160), (6, 3329300), (8, 2496975), (10, 1997580), (12, 1664650), (13, 1536600), (15, 1331720), (20, 998790), (24, 832325), (25, 799032), (26, 768300), (30, 665860), (39, 512200), (40, 499395), (50, 399516), (52, 384150), (60, 332930), (65, 307320), (75, 266344), (78, 256100), (100, 199758), (104, 192075), (120, 166465), (130, 153660), (150, 133172), (156, 128050), (169, 118200), (195, 102440), (197, 101400), (200, 99879), (260, 76830), (300, 66586), (312, 64025), (325, 61464), (338, 59100), (390, 51220), (394, 50700), (507, 39400), (520, 38415), (591, 33800), (600, 33293), (650, 30732), (676, 29550), (780, 25610), (788, 25350), (845, 23640), (975, 20488), (985, 20280), (1014, 19700), (1182, 16900), (1300, 15366), (1352, 14775), (1560, 12805), (1576, 12675), (1690, 11820), (1950, 10244), (1970, 10140), (2028, 9850), (2364, 8450), (2535, 7880), (2561, 7800), (2600, 7683), (2955, 6760), (3380, 5910), (3900, 5122), (3940, 5070), (4056, 4925), (4225, 4728)]