81861360

素因数分解:

$2^4\times 3^1\times 5^1\times 7^2\times {\mathrm{6961}}^1$

素因数の和:6991

約数の個数: 120

約数和(自身を含む): 295244496

約数和(自身を除く): 213383136

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 16, 20, 21, 24, 28, 30, 35, 40, 42, 48, 49, 56, 60, 70, 80, 84, 98, 105, 112, 120, 140, 147, 168, 196, 210, 240, 245, 280, 294, 336, 392, 420, 490, 560, 588, 735, 784, 840, 980, 1176, 1470, 1680, 1960, 2352, 2940, 3920, 5880, 6961, 11760, 13922, 20883, 27844, 34805, 41766, 48727, 55688, 69610, 83532, 97454, 104415, 111376, 139220, 146181, 167064, 194908, 208830, 243635, 278440, 292362, 334128, 341089, 389816, 417660, 487270, 556880, 584724, 682178, 730905, 779632, 835320, 974540, 1023267, 1169448, 1364356, 1461810, 1670640, 1705445, 1949080, 2046534, 2338896, 2728712, 2923620, 3410890, 3898160, 4093068, 5116335, 5457424, 5847240, 6821780, 8186136, 10232670, 11694480, 13643560, 16372272, 20465340, 27287120, 40930680, 81861360]

約数ペア:

[(1, 81861360), (2, 40930680), (3, 27287120), (4, 20465340), (5, 16372272), (6, 13643560), (7, 11694480), (8, 10232670), (10, 8186136), (12, 6821780), (14, 5847240), (15, 5457424), (16, 5116335), (20, 4093068), (21, 3898160), (24, 3410890), (28, 2923620), (30, 2728712), (35, 2338896), (40, 2046534), (42, 1949080), (48, 1705445), (49, 1670640), (56, 1461810), (60, 1364356), (70, 1169448), (80, 1023267), (84, 974540), (98, 835320), (105, 779632), (112, 730905), (120, 682178), (140, 584724), (147, 556880), (168, 487270), (196, 417660), (210, 389816), (240, 341089), (245, 334128), (280, 292362), (294, 278440), (336, 243635), (392, 208830), (420, 194908), (490, 167064), (560, 146181), (588, 139220), (735, 111376), (784, 104415), (840, 97454), (980, 83532), (1176, 69610), (1470, 55688), (1680, 48727), (1960, 41766), (2352, 34805), (2940, 27844), (3920, 20883), (5880, 13922), (6961, 11760)]