18938844

素因数分解:

$2^2\times 3^2\times {\mathrm{23}}^1\times {\mathrm{89}}^1\times {\mathrm{257}}^1$

素因数の和:379

約数の個数: 72

約数和(自身を含む): 50712480

約数和(自身を除く): 31773636

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 23, 36, 46, 69, 89, 92, 138, 178, 207, 257, 267, 276, 356, 414, 514, 534, 771, 801, 828, 1028, 1068, 1542, 1602, 2047, 2313, 3084, 3204, 4094, 4626, 5911, 6141, 8188, 9252, 11822, 12282, 17733, 18423, 22873, 23644, 24564, 35466, 36846, 45746, 53199, 68619, 70932, 73692, 91492, 106398, 137238, 205857, 212796, 274476, 411714, 526079, 823428, 1052158, 1578237, 2104316, 3156474, 4734711, 6312948, 9469422, 18938844]

約数ペア:

[(1, 18938844), (2, 9469422), (3, 6312948), (4, 4734711), (6, 3156474), (9, 2104316), (12, 1578237), (18, 1052158), (23, 823428), (36, 526079), (46, 411714), (69, 274476), (89, 212796), (92, 205857), (138, 137238), (178, 106398), (207, 91492), (257, 73692), (267, 70932), (276, 68619), (356, 53199), (414, 45746), (514, 36846), (534, 35466), (771, 24564), (801, 23644), (828, 22873), (1028, 18423), (1068, 17733), (1542, 12282), (1602, 11822), (2047, 9252), (2313, 8188), (3084, 6141), (3204, 5911), (4094, 4626)]