21872050

素因数分解:

$2^1\times 5^2\times {\mathrm{31}}^1\times {\mathrm{103}}^1\times {\mathrm{137}}^1$

素因数の和:283

約数の個数: 48

約数和(自身を含む): 42711552

約数和(自身を除く): 20839502

約数列:

[1, 2, 5, 10, 25, 31, 50, 62, 103, 137, 155, 206, 274, 310, 515, 685, 775, 1030, 1370, 1550, 2575, 3193, 3425, 4247, 5150, 6386, 6850, 8494, 14111, 15965, 21235, 28222, 31930, 42470, 70555, 79825, 106175, 141110, 159650, 212350, 352775, 437441, 705550, 874882, 2187205, 4374410, 10936025, 21872050]

約数ペア:

[(1, 21872050), (2, 10936025), (5, 4374410), (10, 2187205), (25, 874882), (31, 705550), (50, 437441), (62, 352775), (103, 212350), (137, 159650), (155, 141110), (206, 106175), (274, 79825), (310, 70555), (515, 42470), (685, 31930), (775, 28222), (1030, 21235), (1370, 15965), (1550, 14111), (2575, 8494), (3193, 6850), (3425, 6386), (4247, 5150)]