1287942740

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{15619}}^1$

素因数の和:15685

約数の個数: 96

約数和(自身を含む): 3358924800

約数和(自身を除く): 2070982060

約数列:

[1, 2, 4, 5, 7, 10, 14, 19, 20, 28, 31, 35, 38, 62, 70, 76, 95, 124, 133, 140, 155, 190, 217, 266, 310, 380, 434, 532, 589, 620, 665, 868, 1085, 1178, 1330, 2170, 2356, 2660, 2945, 4123, 4340, 5890, 8246, 11780, 15619, 16492, 20615, 31238, 41230, 62476, 78095, 82460, 109333, 156190, 218666, 296761, 312380, 437332, 484189, 546665, 593522, 968378, 1093330, 1187044, 1483805, 1936756, 2077327, 2186660, 2420945, 2967610, 3389323, 4154654, 4841890, 5935220, 6778646, 8309308, 9199591, 9683780, 10386635, 13557292, 16946615, 18399182, 20773270, 33893230, 36798364, 41546540, 45997955, 64397137, 67786460, 91995910, 128794274, 183991820, 257588548, 321985685, 643971370, 1287942740]

約数ペア:

[(1, 1287942740), (2, 643971370), (4, 321985685), (5, 257588548), (7, 183991820), (10, 128794274), (14, 91995910), (19, 67786460), (20, 64397137), (28, 45997955), (31, 41546540), (35, 36798364), (38, 33893230), (62, 20773270), (70, 18399182), (76, 16946615), (95, 13557292), (124, 10386635), (133, 9683780), (140, 9199591), (155, 8309308), (190, 6778646), (217, 5935220), (266, 4841890), (310, 4154654), (380, 3389323), (434, 2967610), (532, 2420945), (589, 2186660), (620, 2077327), (665, 1936756), (868, 1483805), (1085, 1187044), (1178, 1093330), (1330, 968378), (2170, 593522), (2356, 546665), (2660, 484189), (2945, 437332), (4123, 312380), (4340, 296761), (5890, 218666), (8246, 156190), (11780, 109333), (15619, 82460), (16492, 78095), (20615, 62476), (31238, 41230)]