290435900

素因数分解:

$2^2\times 5^2\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{4931}}^1$

素因数の和:4995

約数の個数: 72

約数和(自身を含む): 684956160

約数和(自身を除く): 394520260

約数列:

[1, 2, 4, 5, 10, 19, 20, 25, 31, 38, 50, 62, 76, 95, 100, 124, 155, 190, 310, 380, 475, 589, 620, 775, 950, 1178, 1550, 1900, 2356, 2945, 3100, 4931, 5890, 9862, 11780, 14725, 19724, 24655, 29450, 49310, 58900, 93689, 98620, 123275, 152861, 187378, 246550, 305722, 374756, 468445, 493100, 611444, 764305, 936890, 1528610, 1873780, 2342225, 2904359, 3057220, 3821525, 4684450, 5808718, 7643050, 9368900, 11617436, 14521795, 15286100, 29043590, 58087180, 72608975, 145217950, 290435900]

約数ペア:

[(1, 290435900), (2, 145217950), (4, 72608975), (5, 58087180), (10, 29043590), (19, 15286100), (20, 14521795), (25, 11617436), (31, 9368900), (38, 7643050), (50, 5808718), (62, 4684450), (76, 3821525), (95, 3057220), (100, 2904359), (124, 2342225), (155, 1873780), (190, 1528610), (310, 936890), (380, 764305), (475, 611444), (589, 493100), (620, 468445), (775, 374756), (950, 305722), (1178, 246550), (1550, 187378), (1900, 152861), (2356, 123275), (2945, 98620), (3100, 93689), (4931, 58900), (5890, 49310), (9862, 29450), (11780, 24655), (14725, 19724)]