20697221888

素因数分解:

$2^8\times 7^1\times {\mathrm{857}}^1\times {\mathrm{13477}}^1$

素因数の和:14357

約数の個数: 72

約数和(自身を含む): 47274138912

約数和(自身を除く): 26576917024

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 32, 56, 64, 112, 128, 224, 256, 448, 857, 896, 1714, 1792, 3428, 5999, 6856, 11998, 13477, 13712, 23996, 26954, 27424, 47992, 53908, 54848, 94339, 95984, 107816, 109696, 188678, 191968, 215632, 219392, 377356, 383936, 431264, 754712, 767872, 862528, 1509424, 1535744, 1725056, 3018848, 3450112, 6037696, 11549789, 12075392, 23099578, 24150784, 46199156, 80848523, 92398312, 161697046, 184796624, 323394092, 369593248, 646788184, 739186496, 1293576368, 1478372992, 2587152736, 2956745984, 5174305472, 10348610944, 20697221888]

約数ペア:

[(1, 20697221888), (2, 10348610944), (4, 5174305472), (7, 2956745984), (8, 2587152736), (14, 1478372992), (16, 1293576368), (28, 739186496), (32, 646788184), (56, 369593248), (64, 323394092), (112, 184796624), (128, 161697046), (224, 92398312), (256, 80848523), (448, 46199156), (857, 24150784), (896, 23099578), (1714, 12075392), (1792, 11549789), (3428, 6037696), (5999, 3450112), (6856, 3018848), (11998, 1725056), (13477, 1535744), (13712, 1509424), (23996, 862528), (26954, 767872), (27424, 754712), (47992, 431264), (53908, 383936), (54848, 377356), (94339, 219392), (95984, 215632), (107816, 191968), (109696, 188678)]