70000020

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{157}}^1\times {\mathrm{2477}}^1$

素因数の和:2649

約数の個数: 72

約数和(自身を含む): 213772104

約数和(自身を除く): 143772084

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 157, 180, 314, 471, 628, 785, 942, 1413, 1570, 1884, 2355, 2477, 2826, 3140, 4710, 4954, 5652, 7065, 7431, 9420, 9908, 12385, 14130, 14862, 22293, 24770, 28260, 29724, 37155, 44586, 49540, 74310, 89172, 111465, 148620, 222930, 388889, 445860, 777778, 1166667, 1555556, 1944445, 2333334, 3500001, 3888890, 4666668, 5833335, 7000002, 7777780, 11666670, 14000004, 17500005, 23333340, 35000010, 70000020]

約数ペア:

[(1, 70000020), (2, 35000010), (3, 23333340), (4, 17500005), (5, 14000004), (6, 11666670), (9, 7777780), (10, 7000002), (12, 5833335), (15, 4666668), (18, 3888890), (20, 3500001), (30, 2333334), (36, 1944445), (45, 1555556), (60, 1166667), (90, 777778), (157, 445860), (180, 388889), (314, 222930), (471, 148620), (628, 111465), (785, 89172), (942, 74310), (1413, 49540), (1570, 44586), (1884, 37155), (2355, 29724), (2477, 28260), (2826, 24770), (3140, 22293), (4710, 14862), (4954, 14130), (5652, 12385), (7065, 9908), (7431, 9420)]