30991660

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{61}}^1\times {\mathrm{191}}^1$

素因数の和:287

約数の個数: 96

約数和(自身を含む): 79994880

約数和(自身を除く): 49003220

約数列:

[1, 2, 4, 5, 7, 10, 14, 19, 20, 28, 35, 38, 61, 70, 76, 95, 122, 133, 140, 190, 191, 244, 266, 305, 380, 382, 427, 532, 610, 665, 764, 854, 955, 1159, 1220, 1330, 1337, 1708, 1910, 2135, 2318, 2660, 2674, 3629, 3820, 4270, 4636, 5348, 5795, 6685, 7258, 8113, 8540, 11590, 11651, 13370, 14516, 16226, 18145, 23180, 23302, 25403, 26740, 32452, 36290, 40565, 46604, 50806, 58255, 72580, 81130, 81557, 101612, 116510, 127015, 162260, 163114, 221369, 233020, 254030, 326228, 407785, 442738, 508060, 815570, 885476, 1106845, 1549583, 1631140, 2213690, 3099166, 4427380, 6198332, 7747915, 15495830, 30991660]

約数ペア:

[(1, 30991660), (2, 15495830), (4, 7747915), (5, 6198332), (7, 4427380), (10, 3099166), (14, 2213690), (19, 1631140), (20, 1549583), (28, 1106845), (35, 885476), (38, 815570), (61, 508060), (70, 442738), (76, 407785), (95, 326228), (122, 254030), (133, 233020), (140, 221369), (190, 163114), (191, 162260), (244, 127015), (266, 116510), (305, 101612), (380, 81557), (382, 81130), (427, 72580), (532, 58255), (610, 50806), (665, 46604), (764, 40565), (854, 36290), (955, 32452), (1159, 26740), (1220, 25403), (1330, 23302), (1337, 23180), (1708, 18145), (1910, 16226), (2135, 14516), (2318, 13370), (2660, 11651), (2674, 11590), (3629, 8540), (3820, 8113), (4270, 7258), (4636, 6685), (5348, 5795)]