18899150

素因数分解:

$2^1\times 5^2\times {\mathrm{31}}^1\times {\mathrm{89}}^1\times {\mathrm{137}}^1$

素因数の和:269

約数の個数: 48

約数和(自身を含む): 36961920

約数和(自身を除く): 18062770

約数列:

[1, 2, 5, 10, 25, 31, 50, 62, 89, 137, 155, 178, 274, 310, 445, 685, 775, 890, 1370, 1550, 2225, 2759, 3425, 4247, 4450, 5518, 6850, 8494, 12193, 13795, 21235, 24386, 27590, 42470, 60965, 68975, 106175, 121930, 137950, 212350, 304825, 377983, 609650, 755966, 1889915, 3779830, 9449575, 18899150]

約数ペア:

[(1, 18899150), (2, 9449575), (5, 3779830), (10, 1889915), (25, 755966), (31, 609650), (50, 377983), (62, 304825), (89, 212350), (137, 137950), (155, 121930), (178, 106175), (274, 68975), (310, 60965), (445, 42470), (685, 27590), (775, 24386), (890, 21235), (1370, 13795), (1550, 12193), (2225, 8494), (2759, 6850), (3425, 5518), (4247, 4450)]