491773750

素因数分解:

$2^1\times 5^4\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{571}}^1$

素因数の和:659

約数の個数: 80

約数和(自身を含む): 1013188176

約数和(自身を除く): 521414426

約数列:

[1, 2, 5, 10, 13, 25, 26, 50, 53, 65, 106, 125, 130, 250, 265, 325, 530, 571, 625, 650, 689, 1142, 1250, 1325, 1378, 1625, 2650, 2855, 3250, 3445, 5710, 6625, 6890, 7423, 8125, 13250, 14275, 14846, 16250, 17225, 28550, 30263, 33125, 34450, 37115, 60526, 66250, 71375, 74230, 86125, 142750, 151315, 172250, 185575, 302630, 356875, 371150, 393419, 430625, 713750, 756575, 786838, 861250, 927875, 1513150, 1855750, 1967095, 3782875, 3934190, 4639375, 7565750, 9278750, 9835475, 18914375, 19670950, 37828750, 49177375, 98354750, 245886875, 491773750]

約数ペア:

[(1, 491773750), (2, 245886875), (5, 98354750), (10, 49177375), (13, 37828750), (25, 19670950), (26, 18914375), (50, 9835475), (53, 9278750), (65, 7565750), (106, 4639375), (125, 3934190), (130, 3782875), (250, 1967095), (265, 1855750), (325, 1513150), (530, 927875), (571, 861250), (625, 786838), (650, 756575), (689, 713750), (1142, 430625), (1250, 393419), (1325, 371150), (1378, 356875), (1625, 302630), (2650, 185575), (2855, 172250), (3250, 151315), (3445, 142750), (5710, 86125), (6625, 74230), (6890, 71375), (7423, 66250), (8125, 60526), (13250, 37115), (14275, 34450), (14846, 33125), (16250, 30263), (17225, 28550)]