20502780

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{73}}^1\times {\mathrm{151}}^1$

素因数の和:267

約数の個数: 96

約数和(自身を含む): 60469248

約数和(自身を除く): 39966468

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 31, 60, 62, 73, 93, 124, 146, 151, 155, 186, 219, 292, 302, 310, 365, 372, 438, 453, 465, 604, 620, 730, 755, 876, 906, 930, 1095, 1460, 1510, 1812, 1860, 2190, 2263, 2265, 3020, 4380, 4526, 4530, 4681, 6789, 9052, 9060, 9362, 11023, 11315, 13578, 14043, 18724, 22046, 22630, 23405, 27156, 28086, 33069, 33945, 44092, 45260, 46810, 55115, 56172, 66138, 67890, 70215, 93620, 110230, 132276, 135780, 140430, 165345, 220460, 280860, 330690, 341713, 661380, 683426, 1025139, 1366852, 1708565, 2050278, 3417130, 4100556, 5125695, 6834260, 10251390, 20502780]

約数ペア:

[(1, 20502780), (2, 10251390), (3, 6834260), (4, 5125695), (5, 4100556), (6, 3417130), (10, 2050278), (12, 1708565), (15, 1366852), (20, 1025139), (30, 683426), (31, 661380), (60, 341713), (62, 330690), (73, 280860), (93, 220460), (124, 165345), (146, 140430), (151, 135780), (155, 132276), (186, 110230), (219, 93620), (292, 70215), (302, 67890), (310, 66138), (365, 56172), (372, 55115), (438, 46810), (453, 45260), (465, 44092), (604, 33945), (620, 33069), (730, 28086), (755, 27156), (876, 23405), (906, 22630), (930, 22046), (1095, 18724), (1460, 14043), (1510, 13578), (1812, 11315), (1860, 11023), (2190, 9362), (2263, 9060), (2265, 9052), (3020, 6789), (4380, 4681), (4526, 4530)]