81385740

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{53}}^1\times {\mathrm{449}}^1$

素因数の和:536

約数の個数: 144

約数和(自身を含む): 265356000

約数和(自身を除く): 183970260

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 19, 20, 30, 36, 38, 45, 53, 57, 60, 76, 90, 95, 106, 114, 159, 171, 180, 190, 212, 228, 265, 285, 318, 342, 380, 449, 477, 530, 570, 636, 684, 795, 855, 898, 954, 1007, 1060, 1140, 1347, 1590, 1710, 1796, 1908, 2014, 2245, 2385, 2694, 3021, 3180, 3420, 4028, 4041, 4490, 4770, 5035, 5388, 6042, 6735, 8082, 8531, 8980, 9063, 9540, 10070, 12084, 13470, 15105, 16164, 17062, 18126, 20140, 20205, 23797, 25593, 26940, 30210, 34124, 36252, 40410, 42655, 45315, 47594, 51186, 60420, 71391, 76779, 80820, 85310, 90630, 95188, 102372, 118985, 127965, 142782, 153558, 170620, 181260, 214173, 237970, 255930, 285564, 307116, 356955, 383895, 428346, 452143, 475940, 511860, 713910, 767790, 856692, 904286, 1070865, 1356429, 1427820, 1535580, 1808572, 2141730, 2260715, 2712858, 4069287, 4283460, 4521430, 5425716, 6782145, 8138574, 9042860, 13564290, 16277148, 20346435, 27128580, 40692870, 81385740]

約数ペア:

[(1, 81385740), (2, 40692870), (3, 27128580), (4, 20346435), (5, 16277148), (6, 13564290), (9, 9042860), (10, 8138574), (12, 6782145), (15, 5425716), (18, 4521430), (19, 4283460), (20, 4069287), (30, 2712858), (36, 2260715), (38, 2141730), (45, 1808572), (53, 1535580), (57, 1427820), (60, 1356429), (76, 1070865), (90, 904286), (95, 856692), (106, 767790), (114, 713910), (159, 511860), (171, 475940), (180, 452143), (190, 428346), (212, 383895), (228, 356955), (265, 307116), (285, 285564), (318, 255930), (342, 237970), (380, 214173), (449, 181260), (477, 170620), (530, 153558), (570, 142782), (636, 127965), (684, 118985), (795, 102372), (855, 95188), (898, 90630), (954, 85310), (1007, 80820), (1060, 76779), (1140, 71391), (1347, 60420), (1590, 51186), (1710, 47594), (1796, 45315), (1908, 42655), (2014, 40410), (2245, 36252), (2385, 34124), (2694, 30210), (3021, 26940), (3180, 25593), (3420, 23797), (4028, 20205), (4041, 20140), (4490, 18126), (4770, 17062), (5035, 16164), (5388, 15105), (6042, 13470), (6735, 12084), (8082, 10070), (8531, 9540), (8980, 9063)]