256431312

素因数分解:

$2^4\times 3^3\times {\mathrm{37}}^1\times {\mathrm{61}}^1\times {\mathrm{263}}^1$

素因数の和:378

約数の個数: 160

約数和(自身を含む): 771260160

約数和(自身を除く): 514828848

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 27, 36, 37, 48, 54, 61, 72, 74, 108, 111, 122, 144, 148, 183, 216, 222, 244, 263, 296, 333, 366, 432, 444, 488, 526, 549, 592, 666, 732, 789, 888, 976, 999, 1052, 1098, 1332, 1464, 1578, 1647, 1776, 1998, 2104, 2196, 2257, 2367, 2664, 2928, 3156, 3294, 3996, 4208, 4392, 4514, 4734, 5328, 6312, 6588, 6771, 7101, 7992, 8784, 9028, 9468, 9731, 12624, 13176, 13542, 14202, 15984, 16043, 18056, 18936, 19462, 20313, 26352, 27084, 28404, 29193, 32086, 36112, 37872, 38924, 40626, 48129, 54168, 56808, 58386, 60939, 64172, 77848, 81252, 87579, 96258, 108336, 113616, 116772, 121878, 128344, 144387, 155696, 162504, 175158, 192516, 233544, 243756, 256688, 262737, 288774, 325008, 350316, 385032, 433161, 467088, 487512, 525474, 577548, 593591, 700632, 770064, 866322, 975024, 1050948, 1155096, 1187182, 1401264, 1732644, 1780773, 2101896, 2310192, 2374364, 3465288, 3561546, 4203792, 4748728, 5342319, 6930576, 7123092, 9497456, 10684638, 14246184, 16026957, 21369276, 28492368, 32053914, 42738552, 64107828, 85477104, 128215656, 256431312]

約数ペア:

[(1, 256431312), (2, 128215656), (3, 85477104), (4, 64107828), (6, 42738552), (8, 32053914), (9, 28492368), (12, 21369276), (16, 16026957), (18, 14246184), (24, 10684638), (27, 9497456), (36, 7123092), (37, 6930576), (48, 5342319), (54, 4748728), (61, 4203792), (72, 3561546), (74, 3465288), (108, 2374364), (111, 2310192), (122, 2101896), (144, 1780773), (148, 1732644), (183, 1401264), (216, 1187182), (222, 1155096), (244, 1050948), (263, 975024), (296, 866322), (333, 770064), (366, 700632), (432, 593591), (444, 577548), (488, 525474), (526, 487512), (549, 467088), (592, 433161), (666, 385032), (732, 350316), (789, 325008), (888, 288774), (976, 262737), (999, 256688), (1052, 243756), (1098, 233544), (1332, 192516), (1464, 175158), (1578, 162504), (1647, 155696), (1776, 144387), (1998, 128344), (2104, 121878), (2196, 116772), (2257, 113616), (2367, 108336), (2664, 96258), (2928, 87579), (3156, 81252), (3294, 77848), (3996, 64172), (4208, 60939), (4392, 58386), (4514, 56808), (4734, 54168), (5328, 48129), (6312, 40626), (6588, 38924), (6771, 37872), (7101, 36112), (7992, 32086), (8784, 29193), (9028, 28404), (9468, 27084), (9731, 26352), (12624, 20313), (13176, 19462), (13542, 18936), (14202, 18056), (15984, 16043)]