257440716

素因数分解:

$2^2\times 3^2\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{97}}^1\times {\mathrm{107}}^1$

素因数の和:280

約数の個数: 144

約数和(自身を含む): 728136864

約数和(自身を除く): 470696148

約数列:

[1, 2, 3, 4, 6, 9, 12, 13, 18, 26, 36, 39, 52, 53, 78, 97, 106, 107, 117, 156, 159, 194, 212, 214, 234, 291, 318, 321, 388, 428, 468, 477, 582, 636, 642, 689, 873, 954, 963, 1164, 1261, 1284, 1378, 1391, 1746, 1908, 1926, 2067, 2522, 2756, 2782, 3492, 3783, 3852, 4134, 4173, 5044, 5141, 5564, 5671, 6201, 7566, 8268, 8346, 10282, 10379, 11342, 11349, 12402, 12519, 15132, 15423, 16692, 17013, 20564, 20758, 22684, 22698, 24804, 25038, 30846, 31137, 34026, 41516, 45396, 46269, 50076, 51039, 61692, 62274, 66833, 68052, 73723, 92538, 93411, 102078, 124548, 133666, 134927, 147446, 185076, 186822, 200499, 204156, 221169, 267332, 269854, 294892, 373644, 400998, 404781, 442338, 539708, 550087, 601497, 663507, 801996, 809562, 884676, 1100174, 1202994, 1214343, 1327014, 1619124, 1650261, 2200348, 2405988, 2428686, 2654028, 3300522, 4857372, 4950783, 6601044, 7151131, 9901566, 14302262, 19803132, 21453393, 28604524, 42906786, 64360179, 85813572, 128720358, 257440716]

約数ペア:

[(1, 257440716), (2, 128720358), (3, 85813572), (4, 64360179), (6, 42906786), (9, 28604524), (12, 21453393), (13, 19803132), (18, 14302262), (26, 9901566), (36, 7151131), (39, 6601044), (52, 4950783), (53, 4857372), (78, 3300522), (97, 2654028), (106, 2428686), (107, 2405988), (117, 2200348), (156, 1650261), (159, 1619124), (194, 1327014), (212, 1214343), (214, 1202994), (234, 1100174), (291, 884676), (318, 809562), (321, 801996), (388, 663507), (428, 601497), (468, 550087), (477, 539708), (582, 442338), (636, 404781), (642, 400998), (689, 373644), (873, 294892), (954, 269854), (963, 267332), (1164, 221169), (1261, 204156), (1284, 200499), (1378, 186822), (1391, 185076), (1746, 147446), (1908, 134927), (1926, 133666), (2067, 124548), (2522, 102078), (2756, 93411), (2782, 92538), (3492, 73723), (3783, 68052), (3852, 66833), (4134, 62274), (4173, 61692), (5044, 51039), (5141, 50076), (5564, 46269), (5671, 45396), (6201, 41516), (7566, 34026), (8268, 31137), (8346, 30846), (10282, 25038), (10379, 24804), (11342, 22698), (11349, 22684), (12402, 20758), (12519, 20564), (15132, 17013), (15423, 16692)]