248887840

素因数分解:

$2^5\times 5^1\times {\mathrm{19}}^2\times {\mathrm{31}}^1\times {\mathrm{139}}^1$

素因数の和:223

約数の個数: 144

約数和(自身を含む): 645200640

約数和(自身を除く): 396312800

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 31, 32, 38, 40, 62, 76, 80, 95, 124, 139, 152, 155, 160, 190, 248, 278, 304, 310, 361, 380, 496, 556, 589, 608, 620, 695, 722, 760, 992, 1112, 1178, 1240, 1390, 1444, 1520, 1805, 2224, 2356, 2480, 2641, 2780, 2888, 2945, 3040, 3610, 4309, 4448, 4712, 4960, 5282, 5560, 5776, 5890, 7220, 8618, 9424, 10564, 11120, 11191, 11552, 11780, 13205, 14440, 17236, 18848, 21128, 21545, 22240, 22382, 23560, 26410, 28880, 34472, 42256, 43090, 44764, 47120, 50179, 52820, 55955, 57760, 68944, 81871, 84512, 86180, 89528, 94240, 100358, 105640, 111910, 137888, 163742, 172360, 179056, 200716, 211280, 223820, 250895, 327484, 344720, 358112, 401432, 409355, 422560, 447640, 501790, 654968, 689440, 802864, 818710, 895280, 1003580, 1309936, 1555549, 1605728, 1637420, 1790560, 2007160, 2619872, 3111098, 3274840, 4014320, 6222196, 6549680, 7777745, 8028640, 12444392, 13099360, 15555490, 24888784, 31110980, 49777568, 62221960, 124443920, 248887840]

約数ペア:

[(1, 248887840), (2, 124443920), (4, 62221960), (5, 49777568), (8, 31110980), (10, 24888784), (16, 15555490), (19, 13099360), (20, 12444392), (31, 8028640), (32, 7777745), (38, 6549680), (40, 6222196), (62, 4014320), (76, 3274840), (80, 3111098), (95, 2619872), (124, 2007160), (139, 1790560), (152, 1637420), (155, 1605728), (160, 1555549), (190, 1309936), (248, 1003580), (278, 895280), (304, 818710), (310, 802864), (361, 689440), (380, 654968), (496, 501790), (556, 447640), (589, 422560), (608, 409355), (620, 401432), (695, 358112), (722, 344720), (760, 327484), (992, 250895), (1112, 223820), (1178, 211280), (1240, 200716), (1390, 179056), (1444, 172360), (1520, 163742), (1805, 137888), (2224, 111910), (2356, 105640), (2480, 100358), (2641, 94240), (2780, 89528), (2888, 86180), (2945, 84512), (3040, 81871), (3610, 68944), (4309, 57760), (4448, 55955), (4712, 52820), (4960, 50179), (5282, 47120), (5560, 44764), (5776, 43090), (5890, 42256), (7220, 34472), (8618, 28880), (9424, 26410), (10564, 23560), (11120, 22382), (11191, 22240), (11552, 21545), (11780, 21128), (13205, 18848), (14440, 17236)]