278130020

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{43}}^1\times {\mathrm{47}}^1\times {\mathrm{983}}^1$

素因数の和:1089

約数の個数: 96

約数和(自身を含む): 698277888

約数和(自身を除く): 420147868

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 43, 47, 70, 86, 94, 140, 172, 188, 215, 235, 301, 329, 430, 470, 602, 658, 860, 940, 983, 1204, 1316, 1505, 1645, 1966, 2021, 3010, 3290, 3932, 4042, 4915, 6020, 6580, 6881, 8084, 9830, 10105, 13762, 14147, 19660, 20210, 27524, 28294, 34405, 40420, 42269, 46201, 56588, 68810, 70735, 84538, 92402, 137620, 141470, 169076, 184804, 211345, 231005, 282940, 295883, 323407, 422690, 462010, 591766, 646814, 845380, 924020, 1183532, 1293628, 1479415, 1617035, 1986643, 2958830, 3234070, 3973286, 5917660, 6468140, 7946572, 9933215, 13906501, 19866430, 27813002, 39732860, 55626004, 69532505, 139065010, 278130020]

約数ペア:

[(1, 278130020), (2, 139065010), (4, 69532505), (5, 55626004), (7, 39732860), (10, 27813002), (14, 19866430), (20, 13906501), (28, 9933215), (35, 7946572), (43, 6468140), (47, 5917660), (70, 3973286), (86, 3234070), (94, 2958830), (140, 1986643), (172, 1617035), (188, 1479415), (215, 1293628), (235, 1183532), (301, 924020), (329, 845380), (430, 646814), (470, 591766), (602, 462010), (658, 422690), (860, 323407), (940, 295883), (983, 282940), (1204, 231005), (1316, 211345), (1505, 184804), (1645, 169076), (1966, 141470), (2021, 137620), (3010, 92402), (3290, 84538), (3932, 70735), (4042, 68810), (4915, 56588), (6020, 46201), (6580, 42269), (6881, 40420), (8084, 34405), (9830, 28294), (10105, 27524), (13762, 20210), (14147, 19660)]