77665540

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^2\times {\mathrm{31}}^1\times {\mathrm{347}}^1$

素因数の和:425

約数の個数: 72

約数和(自身を含む): 178198272

約数和(自身を除く): 100532732

約数列:

[1, 2, 4, 5, 10, 19, 20, 31, 38, 62, 76, 95, 124, 155, 190, 310, 347, 361, 380, 589, 620, 694, 722, 1178, 1388, 1444, 1735, 1805, 2356, 2945, 3470, 3610, 5890, 6593, 6940, 7220, 10757, 11191, 11780, 13186, 21514, 22382, 26372, 32965, 43028, 44764, 53785, 55955, 65930, 107570, 111910, 125267, 131860, 204383, 215140, 223820, 250534, 408766, 501068, 626335, 817532, 1021915, 1252670, 2043830, 2505340, 3883277, 4087660, 7766554, 15533108, 19416385, 38832770, 77665540]

約数ペア:

[(1, 77665540), (2, 38832770), (4, 19416385), (5, 15533108), (10, 7766554), (19, 4087660), (20, 3883277), (31, 2505340), (38, 2043830), (62, 1252670), (76, 1021915), (95, 817532), (124, 626335), (155, 501068), (190, 408766), (310, 250534), (347, 223820), (361, 215140), (380, 204383), (589, 131860), (620, 125267), (694, 111910), (722, 107570), (1178, 65930), (1388, 55955), (1444, 53785), (1735, 44764), (1805, 43028), (2356, 32965), (2945, 26372), (3470, 22382), (3610, 21514), (5890, 13186), (6593, 11780), (6940, 11191), (7220, 10757)]