18744940

素因数分解:

$2^2\times 5^1\times {\mathrm{37}}^1\times {\mathrm{73}}^1\times {\mathrm{347}}^1$

素因数の和:466

約数の個数: 48

約数和(自身を含む): 41100192

約数和(自身を除く): 22355252

約数列:

[1, 2, 4, 5, 10, 20, 37, 73, 74, 146, 148, 185, 292, 347, 365, 370, 694, 730, 740, 1388, 1460, 1735, 2701, 3470, 5402, 6940, 10804, 12839, 13505, 25331, 25678, 27010, 50662, 51356, 54020, 64195, 101324, 126655, 128390, 253310, 256780, 506620, 937247, 1874494, 3748988, 4686235, 9372470, 18744940]

約数ペア:

[(1, 18744940), (2, 9372470), (4, 4686235), (5, 3748988), (10, 1874494), (20, 937247), (37, 506620), (73, 256780), (74, 253310), (146, 128390), (148, 126655), (185, 101324), (292, 64195), (347, 54020), (365, 51356), (370, 50662), (694, 27010), (730, 25678), (740, 25331), (1388, 13505), (1460, 12839), (1735, 10804), (2701, 6940), (3470, 5402)]