78040620

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{241}}^1\times {\mathrm{257}}^1$

素因数の和:520

約数の個数: 144

約数和(自身を含む): 272720448

約数和(自身を除く): 194679828

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 35, 36, 42, 45, 60, 63, 70, 84, 90, 105, 126, 140, 180, 210, 241, 252, 257, 315, 420, 482, 514, 630, 723, 771, 964, 1028, 1205, 1260, 1285, 1446, 1542, 1687, 1799, 2169, 2313, 2410, 2570, 2892, 3084, 3374, 3598, 3615, 3855, 4338, 4626, 4820, 5061, 5140, 5397, 6748, 7196, 7230, 7710, 8435, 8676, 8995, 9252, 10122, 10794, 10845, 11565, 14460, 15183, 15420, 16191, 16870, 17990, 20244, 21588, 21690, 23130, 25305, 26985, 30366, 32382, 33740, 35980, 43380, 46260, 50610, 53970, 60732, 61937, 64764, 75915, 80955, 101220, 107940, 123874, 151830, 161910, 185811, 247748, 303660, 309685, 323820, 371622, 433559, 557433, 619370, 743244, 867118, 929055, 1114866, 1238740, 1300677, 1734236, 1858110, 2167795, 2229732, 2601354, 2787165, 3716220, 3902031, 4335590, 5202708, 5574330, 6503385, 7804062, 8671180, 11148660, 13006770, 15608124, 19510155, 26013540, 39020310, 78040620]

約数ペア:

[(1, 78040620), (2, 39020310), (3, 26013540), (4, 19510155), (5, 15608124), (6, 13006770), (7, 11148660), (9, 8671180), (10, 7804062), (12, 6503385), (14, 5574330), (15, 5202708), (18, 4335590), (20, 3902031), (21, 3716220), (28, 2787165), (30, 2601354), (35, 2229732), (36, 2167795), (42, 1858110), (45, 1734236), (60, 1300677), (63, 1238740), (70, 1114866), (84, 929055), (90, 867118), (105, 743244), (126, 619370), (140, 557433), (180, 433559), (210, 371622), (241, 323820), (252, 309685), (257, 303660), (315, 247748), (420, 185811), (482, 161910), (514, 151830), (630, 123874), (723, 107940), (771, 101220), (964, 80955), (1028, 75915), (1205, 64764), (1260, 61937), (1285, 60732), (1446, 53970), (1542, 50610), (1687, 46260), (1799, 43380), (2169, 35980), (2313, 33740), (2410, 32382), (2570, 30366), (2892, 26985), (3084, 25305), (3374, 23130), (3598, 21690), (3615, 21588), (3855, 20244), (4338, 17990), (4626, 16870), (4820, 16191), (5061, 15420), (5140, 15183), (5397, 14460), (6748, 11565), (7196, 10845), (7230, 10794), (7710, 10122), (8435, 9252), (8676, 8995)]