13121820

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{269}}^1\times {\mathrm{271}}^1$

素因数の和:555

約数の個数: 72

約数和(自身を含む): 40098240

約数和(自身を除く): 26976420

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 269, 271, 538, 542, 807, 813, 1076, 1084, 1345, 1355, 1614, 1626, 2421, 2439, 2690, 2710, 3228, 3252, 4035, 4065, 4842, 4878, 5380, 5420, 8070, 8130, 9684, 9756, 12105, 12195, 16140, 16260, 24210, 24390, 48420, 48780, 72899, 145798, 218697, 291596, 364495, 437394, 656091, 728990, 874788, 1093485, 1312182, 1457980, 2186970, 2624364, 3280455, 4373940, 6560910, 13121820]

約数ペア:

[(1, 13121820), (2, 6560910), (3, 4373940), (4, 3280455), (5, 2624364), (6, 2186970), (9, 1457980), (10, 1312182), (12, 1093485), (15, 874788), (18, 728990), (20, 656091), (30, 437394), (36, 364495), (45, 291596), (60, 218697), (90, 145798), (180, 72899), (269, 48780), (271, 48420), (538, 24390), (542, 24210), (807, 16260), (813, 16140), (1076, 12195), (1084, 12105), (1345, 9756), (1355, 9684), (1614, 8130), (1626, 8070), (2421, 5420), (2439, 5380), (2690, 4878), (2710, 4842), (3228, 4065), (3252, 4035)]