20228920

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{619}}^1$

素因数の和:692

約数の個数: 64

約数和(自身を含む): 49104000

約数和(自身を除く): 28875080

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 43, 76, 86, 95, 152, 172, 190, 215, 344, 380, 430, 619, 760, 817, 860, 1238, 1634, 1720, 2476, 3095, 3268, 4085, 4952, 6190, 6536, 8170, 11761, 12380, 16340, 23522, 24760, 26617, 32680, 47044, 53234, 58805, 94088, 106468, 117610, 133085, 212936, 235220, 266170, 470440, 505723, 532340, 1011446, 1064680, 2022892, 2528615, 4045784, 5057230, 10114460, 20228920]

約数ペア:

[(1, 20228920), (2, 10114460), (4, 5057230), (5, 4045784), (8, 2528615), (10, 2022892), (19, 1064680), (20, 1011446), (38, 532340), (40, 505723), (43, 470440), (76, 266170), (86, 235220), (95, 212936), (152, 133085), (172, 117610), (190, 106468), (215, 94088), (344, 58805), (380, 53234), (430, 47044), (619, 32680), (760, 26617), (817, 24760), (860, 23522), (1238, 16340), (1634, 12380), (1720, 11761), (2476, 8170), (3095, 6536), (3268, 6190), (4085, 4952)]