261804690

素因数分解:

$2^1\times 3^3\times 5^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{1951}}^1$

素因数の和:2045

約数の個数: 128

約数和(自身を含む): 809533440

約数和(自身を除く): 547728750

約数列:

[1, 2, 3, 5, 6, 7, 9, 10, 14, 15, 18, 21, 27, 30, 35, 42, 45, 54, 63, 70, 71, 90, 105, 126, 135, 142, 189, 210, 213, 270, 315, 355, 378, 426, 497, 630, 639, 710, 945, 994, 1065, 1278, 1491, 1890, 1917, 1951, 2130, 2485, 2982, 3195, 3834, 3902, 4473, 4970, 5853, 6390, 7455, 8946, 9585, 9755, 11706, 13419, 13657, 14910, 17559, 19170, 19510, 22365, 26838, 27314, 29265, 35118, 40971, 44730, 52677, 58530, 67095, 68285, 81942, 87795, 105354, 122913, 134190, 136570, 138521, 175590, 204855, 245826, 263385, 277042, 368739, 409710, 415563, 526770, 614565, 692605, 737478, 831126, 969647, 1229130, 1246689, 1385210, 1843695, 1939294, 2077815, 2493378, 2908941, 3687390, 3740067, 4155630, 4848235, 5817882, 6233445, 7480134, 8726823, 9696470, 12466890, 14544705, 17453646, 18700335, 26180469, 29089410, 37400670, 43634115, 52360938, 87268230, 130902345, 261804690]

約数ペア:

[(1, 261804690), (2, 130902345), (3, 87268230), (5, 52360938), (6, 43634115), (7, 37400670), (9, 29089410), (10, 26180469), (14, 18700335), (15, 17453646), (18, 14544705), (21, 12466890), (27, 9696470), (30, 8726823), (35, 7480134), (42, 6233445), (45, 5817882), (54, 4848235), (63, 4155630), (70, 3740067), (71, 3687390), (90, 2908941), (105, 2493378), (126, 2077815), (135, 1939294), (142, 1843695), (189, 1385210), (210, 1246689), (213, 1229130), (270, 969647), (315, 831126), (355, 737478), (378, 692605), (426, 614565), (497, 526770), (630, 415563), (639, 409710), (710, 368739), (945, 277042), (994, 263385), (1065, 245826), (1278, 204855), (1491, 175590), (1890, 138521), (1917, 136570), (1951, 134190), (2130, 122913), (2485, 105354), (2982, 87795), (3195, 81942), (3834, 68285), (3902, 67095), (4473, 58530), (4970, 52677), (5853, 44730), (6390, 40971), (7455, 35118), (8946, 29265), (9585, 27314), (9755, 26838), (11706, 22365), (13419, 19510), (13657, 19170), (14910, 17559)]