31123820

素因数分解:

$2^2\times 5^1\times 7^3\times {\mathrm{13}}^1\times {\mathrm{349}}^1$

素因数の和:392

約数の個数: 96

約数和(自身を含む): 82320000

約数和(自身を除く): 51196180

約数列:

[1, 2, 4, 5, 7, 10, 13, 14, 20, 26, 28, 35, 49, 52, 65, 70, 91, 98, 130, 140, 182, 196, 245, 260, 343, 349, 364, 455, 490, 637, 686, 698, 910, 980, 1274, 1372, 1396, 1715, 1745, 1820, 2443, 2548, 3185, 3430, 3490, 4459, 4537, 4886, 6370, 6860, 6980, 8918, 9074, 9772, 12215, 12740, 17101, 17836, 18148, 22295, 22685, 24430, 31759, 34202, 44590, 45370, 48860, 63518, 68404, 85505, 89180, 90740, 119707, 127036, 158795, 171010, 222313, 239414, 317590, 342020, 444626, 478828, 598535, 635180, 889252, 1111565, 1197070, 1556191, 2223130, 2394140, 3112382, 4446260, 6224764, 7780955, 15561910, 31123820]

約数ペア:

[(1, 31123820), (2, 15561910), (4, 7780955), (5, 6224764), (7, 4446260), (10, 3112382), (13, 2394140), (14, 2223130), (20, 1556191), (26, 1197070), (28, 1111565), (35, 889252), (49, 635180), (52, 598535), (65, 478828), (70, 444626), (91, 342020), (98, 317590), (130, 239414), (140, 222313), (182, 171010), (196, 158795), (245, 127036), (260, 119707), (343, 90740), (349, 89180), (364, 85505), (455, 68404), (490, 63518), (637, 48860), (686, 45370), (698, 44590), (910, 34202), (980, 31759), (1274, 24430), (1372, 22685), (1396, 22295), (1715, 18148), (1745, 17836), (1820, 17101), (2443, 12740), (2548, 12215), (3185, 9772), (3430, 9074), (3490, 8918), (4459, 6980), (4537, 6860), (4886, 6370)]