1911780

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1$

素因数の和:90

約数の個数: 144

約数和(自身を含む): 6726720

約数和(自身を除く): 4814940

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 13, 15, 18, 19, 20, 26, 30, 36, 38, 39, 43, 45, 52, 57, 60, 65, 76, 78, 86, 90, 95, 114, 117, 129, 130, 156, 171, 172, 180, 190, 195, 215, 228, 234, 247, 258, 260, 285, 342, 380, 387, 390, 430, 468, 494, 516, 559, 570, 585, 645, 684, 741, 774, 780, 817, 855, 860, 988, 1118, 1140, 1170, 1235, 1290, 1482, 1548, 1634, 1677, 1710, 1935, 2223, 2236, 2340, 2451, 2470, 2580, 2795, 2964, 3268, 3354, 3420, 3705, 3870, 4085, 4446, 4902, 4940, 5031, 5590, 6708, 7353, 7410, 7740, 8170, 8385, 8892, 9804, 10062, 10621, 11115, 11180, 12255, 14706, 14820, 16340, 16770, 20124, 21242, 22230, 24510, 25155, 29412, 31863, 33540, 36765, 42484, 44460, 49020, 50310, 53105, 63726, 73530, 95589, 100620, 106210, 127452, 147060, 159315, 191178, 212420, 318630, 382356, 477945, 637260, 955890, 1911780]

約数ペア:

[(1, 1911780), (2, 955890), (3, 637260), (4, 477945), (5, 382356), (6, 318630), (9, 212420), (10, 191178), (12, 159315), (13, 147060), (15, 127452), (18, 106210), (19, 100620), (20, 95589), (26, 73530), (30, 63726), (36, 53105), (38, 50310), (39, 49020), (43, 44460), (45, 42484), (52, 36765), (57, 33540), (60, 31863), (65, 29412), (76, 25155), (78, 24510), (86, 22230), (90, 21242), (95, 20124), (114, 16770), (117, 16340), (129, 14820), (130, 14706), (156, 12255), (171, 11180), (172, 11115), (180, 10621), (190, 10062), (195, 9804), (215, 8892), (228, 8385), (234, 8170), (247, 7740), (258, 7410), (260, 7353), (285, 6708), (342, 5590), (380, 5031), (387, 4940), (390, 4902), (430, 4446), (468, 4085), (494, 3870), (516, 3705), (559, 3420), (570, 3354), (585, 3268), (645, 2964), (684, 2795), (741, 2580), (774, 2470), (780, 2451), (817, 2340), (855, 2236), (860, 2223), (988, 1935), (1118, 1710), (1140, 1677), (1170, 1634), (1235, 1548), (1290, 1482)]