256432930

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{197}}^1$

素因数の和:284

約数の個数: 128

約数和(自身を含む): 574801920

約数和(自身を除く): 318368990

約数列:

[1, 2, 5, 10, 13, 17, 19, 26, 31, 34, 38, 62, 65, 85, 95, 130, 155, 170, 190, 197, 221, 247, 310, 323, 394, 403, 442, 494, 527, 589, 646, 806, 985, 1054, 1105, 1178, 1235, 1615, 1970, 2015, 2210, 2470, 2561, 2635, 2945, 3230, 3349, 3743, 4030, 4199, 5122, 5270, 5890, 6107, 6698, 6851, 7486, 7657, 8398, 10013, 12214, 12805, 13702, 15314, 16745, 18715, 20026, 20995, 25610, 30535, 33490, 34255, 37430, 38285, 41990, 43537, 48659, 50065, 61070, 63631, 68510, 76570, 79391, 87074, 97318, 100130, 103819, 116033, 127262, 130169, 158782, 207638, 217685, 232066, 243295, 260338, 318155, 396955, 435370, 486590, 519095, 580165, 636310, 650845, 793910, 827203, 1038190, 1160330, 1301690, 1349647, 1508429, 1654406, 1972561, 2699294, 3016858, 3945122, 4136015, 6748235, 7542145, 8272030, 9862805, 13496470, 15084290, 19725610, 25643293, 51286586, 128216465, 256432930]

約数ペア:

[(1, 256432930), (2, 128216465), (5, 51286586), (10, 25643293), (13, 19725610), (17, 15084290), (19, 13496470), (26, 9862805), (31, 8272030), (34, 7542145), (38, 6748235), (62, 4136015), (65, 3945122), (85, 3016858), (95, 2699294), (130, 1972561), (155, 1654406), (170, 1508429), (190, 1349647), (197, 1301690), (221, 1160330), (247, 1038190), (310, 827203), (323, 793910), (394, 650845), (403, 636310), (442, 580165), (494, 519095), (527, 486590), (589, 435370), (646, 396955), (806, 318155), (985, 260338), (1054, 243295), (1105, 232066), (1178, 217685), (1235, 207638), (1615, 158782), (1970, 130169), (2015, 127262), (2210, 116033), (2470, 103819), (2561, 100130), (2635, 97318), (2945, 87074), (3230, 79391), (3349, 76570), (3743, 68510), (4030, 63631), (4199, 61070), (5122, 50065), (5270, 48659), (5890, 43537), (6107, 41990), (6698, 38285), (6851, 37430), (7486, 34255), (7657, 33490), (8398, 30535), (10013, 25610), (12214, 20995), (12805, 20026), (13702, 18715), (15314, 16745)]