19992700

素因数分解:

$2^2\times 5^2\times 7^1\times {\mathrm{13}}^4$

素因数の和:73

約数の個数: 90

約数和(自身を含む): 53713576

約数和(自身を除く): 33720876

約数列:

[1, 2, 4, 5, 7, 10, 13, 14, 20, 25, 26, 28, 35, 50, 52, 65, 70, 91, 100, 130, 140, 169, 175, 182, 260, 325, 338, 350, 364, 455, 650, 676, 700, 845, 910, 1183, 1300, 1690, 1820, 2197, 2275, 2366, 3380, 4225, 4394, 4550, 4732, 5915, 8450, 8788, 9100, 10985, 11830, 15379, 16900, 21970, 23660, 28561, 29575, 30758, 43940, 54925, 57122, 59150, 61516, 76895, 109850, 114244, 118300, 142805, 153790, 199927, 219700, 285610, 307580, 384475, 399854, 571220, 714025, 768950, 799708, 999635, 1428050, 1537900, 1999270, 2856100, 3998540, 4998175, 9996350, 19992700]

約数ペア:

[(1, 19992700), (2, 9996350), (4, 4998175), (5, 3998540), (7, 2856100), (10, 1999270), (13, 1537900), (14, 1428050), (20, 999635), (25, 799708), (26, 768950), (28, 714025), (35, 571220), (50, 399854), (52, 384475), (65, 307580), (70, 285610), (91, 219700), (100, 199927), (130, 153790), (140, 142805), (169, 118300), (175, 114244), (182, 109850), (260, 76895), (325, 61516), (338, 59150), (350, 57122), (364, 54925), (455, 43940), (650, 30758), (676, 29575), (700, 28561), (845, 23660), (910, 21970), (1183, 16900), (1300, 15379), (1690, 11830), (1820, 10985), (2197, 9100), (2275, 8788), (2366, 8450), (3380, 5915), (4225, 4732), (4394, 4550)]