21149250

素因数分解:

$2^1\times 3^1\times 5^3\times {\mathrm{163}}^1\times {\mathrm{173}}^1$

素因数の和:356

約数の個数: 64

約数和(自身を含む): 53419392

約数和(自身を除く): 32270142

約数列:

[1, 2, 3, 5, 6, 10, 15, 25, 30, 50, 75, 125, 150, 163, 173, 250, 326, 346, 375, 489, 519, 750, 815, 865, 978, 1038, 1630, 1730, 2445, 2595, 4075, 4325, 4890, 5190, 8150, 8650, 12225, 12975, 20375, 21625, 24450, 25950, 28199, 40750, 43250, 56398, 61125, 64875, 84597, 122250, 129750, 140995, 169194, 281990, 422985, 704975, 845970, 1409950, 2114925, 3524875, 4229850, 7049750, 10574625, 21149250]

約数ペア:

[(1, 21149250), (2, 10574625), (3, 7049750), (5, 4229850), (6, 3524875), (10, 2114925), (15, 1409950), (25, 845970), (30, 704975), (50, 422985), (75, 281990), (125, 169194), (150, 140995), (163, 129750), (173, 122250), (250, 84597), (326, 64875), (346, 61125), (375, 56398), (489, 43250), (519, 40750), (750, 28199), (815, 25950), (865, 24450), (978, 21625), (1038, 20375), (1630, 12975), (1730, 12225), (2445, 8650), (2595, 8150), (4075, 5190), (4325, 4890)]