20172788380

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{167}}^1\times {\mathrm{257}}^1\times {\mathrm{331}}^1$

素因数の和:835

約数の個数: 96

約数和(自身を含む): 43515988992

約数和(自身を除く): 23343200612

約数列:

[1, 2, 4, 5, 10, 20, 71, 142, 167, 257, 284, 331, 334, 355, 514, 662, 668, 710, 835, 1028, 1285, 1324, 1420, 1655, 1670, 2570, 3310, 3340, 5140, 6620, 11857, 18247, 23501, 23714, 36494, 42919, 47002, 47428, 55277, 59285, 72988, 85067, 85838, 91235, 94004, 110554, 117505, 118570, 170134, 171676, 182470, 214595, 221108, 235010, 237140, 276385, 340268, 364940, 425335, 429190, 470020, 552770, 850670, 858380, 1105540, 1701340, 3047249, 3924667, 6039757, 6094498, 7849334, 12079514, 12188996, 14206189, 15236245, 15698668, 19623335, 24159028, 28412378, 30198785, 30472490, 39246670, 56824756, 60397570, 60944980, 71030945, 78493340, 120795140, 142061890, 284123780, 1008639419, 2017278838, 4034557676, 5043197095, 10086394190, 20172788380]

約数ペア:

[(1, 20172788380), (2, 10086394190), (4, 5043197095), (5, 4034557676), (10, 2017278838), (20, 1008639419), (71, 284123780), (142, 142061890), (167, 120795140), (257, 78493340), (284, 71030945), (331, 60944980), (334, 60397570), (355, 56824756), (514, 39246670), (662, 30472490), (668, 30198785), (710, 28412378), (835, 24159028), (1028, 19623335), (1285, 15698668), (1324, 15236245), (1420, 14206189), (1655, 12188996), (1670, 12079514), (2570, 7849334), (3310, 6094498), (3340, 6039757), (5140, 3924667), (6620, 3047249), (11857, 1701340), (18247, 1105540), (23501, 858380), (23714, 850670), (36494, 552770), (42919, 470020), (47002, 429190), (47428, 425335), (55277, 364940), (59285, 340268), (72988, 276385), (85067, 237140), (85838, 235010), (91235, 221108), (94004, 214595), (110554, 182470), (117505, 171676), (118570, 170134)]