18378828

素因数分解:

$2^2\times 3^2\times {\mathrm{13}}^1\times {\mathrm{173}}^1\times {\mathrm{227}}^1$

素因数の和:423

約数の個数: 72

約数和(自身を含む): 50542128

約数和(自身を除く): 32163300

約数列:

[1, 2, 3, 4, 6, 9, 12, 13, 18, 26, 36, 39, 52, 78, 117, 156, 173, 227, 234, 346, 454, 468, 519, 681, 692, 908, 1038, 1362, 1557, 2043, 2076, 2249, 2724, 2951, 3114, 4086, 4498, 5902, 6228, 6747, 8172, 8853, 8996, 11804, 13494, 17706, 20241, 26559, 26988, 35412, 39271, 40482, 53118, 78542, 80964, 106236, 117813, 157084, 235626, 353439, 471252, 510523, 706878, 1021046, 1413756, 1531569, 2042092, 3063138, 4594707, 6126276, 9189414, 18378828]

約数ペア:

[(1, 18378828), (2, 9189414), (3, 6126276), (4, 4594707), (6, 3063138), (9, 2042092), (12, 1531569), (13, 1413756), (18, 1021046), (26, 706878), (36, 510523), (39, 471252), (52, 353439), (78, 235626), (117, 157084), (156, 117813), (173, 106236), (227, 80964), (234, 78542), (346, 53118), (454, 40482), (468, 39271), (519, 35412), (681, 26988), (692, 26559), (908, 20241), (1038, 17706), (1362, 13494), (1557, 11804), (2043, 8996), (2076, 8853), (2249, 8172), (2724, 6747), (2951, 6228), (3114, 5902), (4086, 4498)]