81478880

素因数分解:

$2^5\times 5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{3163}}^1$

素因数の和:3208

約数の個数: 96

約数和(自身を含む): 229630464

約数和(自身を除く): 148151584

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 23, 28, 32, 35, 40, 46, 56, 70, 80, 92, 112, 115, 140, 160, 161, 184, 224, 230, 280, 322, 368, 460, 560, 644, 736, 805, 920, 1120, 1288, 1610, 1840, 2576, 3163, 3220, 3680, 5152, 6326, 6440, 12652, 12880, 15815, 22141, 25304, 25760, 31630, 44282, 50608, 63260, 72749, 88564, 101216, 110705, 126520, 145498, 177128, 221410, 253040, 290996, 354256, 363745, 442820, 506080, 509243, 581992, 708512, 727490, 885640, 1018486, 1163984, 1454980, 1771280, 2036972, 2327968, 2546215, 2909960, 3542560, 4073944, 5092430, 5819920, 8147888, 10184860, 11639840, 16295776, 20369720, 40739440, 81478880]

約数ペア:

[(1, 81478880), (2, 40739440), (4, 20369720), (5, 16295776), (7, 11639840), (8, 10184860), (10, 8147888), (14, 5819920), (16, 5092430), (20, 4073944), (23, 3542560), (28, 2909960), (32, 2546215), (35, 2327968), (40, 2036972), (46, 1771280), (56, 1454980), (70, 1163984), (80, 1018486), (92, 885640), (112, 727490), (115, 708512), (140, 581992), (160, 509243), (161, 506080), (184, 442820), (224, 363745), (230, 354256), (280, 290996), (322, 253040), (368, 221410), (460, 177128), (560, 145498), (644, 126520), (736, 110705), (805, 101216), (920, 88564), (1120, 72749), (1288, 63260), (1610, 50608), (1840, 44282), (2576, 31630), (3163, 25760), (3220, 25304), (3680, 22141), (5152, 15815), (6326, 12880), (6440, 12652)]