20819440

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{13697}}^1$

素因数の和:13729

約数の個数: 40

約数和(自身を含む): 50956560

約数和(自身を除く): 30137120

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 38, 40, 76, 80, 95, 152, 190, 304, 380, 760, 1520, 13697, 27394, 54788, 68485, 109576, 136970, 219152, 260243, 273940, 520486, 547880, 1040972, 1095760, 1301215, 2081944, 2602430, 4163888, 5204860, 10409720, 20819440]

約数ペア:

[(1, 20819440), (2, 10409720), (4, 5204860), (5, 4163888), (8, 2602430), (10, 2081944), (16, 1301215), (19, 1095760), (20, 1040972), (38, 547880), (40, 520486), (76, 273940), (80, 260243), (95, 219152), (152, 136970), (190, 109576), (304, 68485), (380, 54788), (760, 27394), (1520, 13697)]