19254260

素因数分解:

$2^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{89}}^1\times {\mathrm{373}}^1$

素因数の和:500

約数の個数: 48

約数和(自身を含む): 42411600

約数和(自身を除く): 23157340

約数列:

[1, 2, 4, 5, 10, 20, 29, 58, 89, 116, 145, 178, 290, 356, 373, 445, 580, 746, 890, 1492, 1780, 1865, 2581, 3730, 5162, 7460, 10324, 10817, 12905, 21634, 25810, 33197, 43268, 51620, 54085, 66394, 108170, 132788, 165985, 216340, 331970, 663940, 962713, 1925426, 3850852, 4813565, 9627130, 19254260]

約数ペア:

[(1, 19254260), (2, 9627130), (4, 4813565), (5, 3850852), (10, 1925426), (20, 962713), (29, 663940), (58, 331970), (89, 216340), (116, 165985), (145, 132788), (178, 108170), (290, 66394), (356, 54085), (373, 51620), (445, 43268), (580, 33197), (746, 25810), (890, 21634), (1492, 12905), (1780, 10817), (1865, 10324), (2581, 7460), (3730, 5162)]